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HOW YOUR CO ALARM WORKS - GENERAL INFORMATION

• 

CO Alarm contains a sealed, non-replaceable battery. Once it reaches the end of its service life, or after 10 years—whichever comes first—you must 

install a new CO Alarm.

• 

High temperatures, low temperatures, high humidity, impact or dropping can adversely affect LCD displays.

A CO Alarm measures the CO levels in the air. It will alarm if CO levels rise quickly (if the heat exchanger on your furnace breaks, for example), or if CO is 

consistently present (a slow CO leak on a fuel-burning appliance).
This carbon monoxide alarm features a permanently installed sensor, digital display with blue backlight, and an 85 dB alarm horn. It also has a silence feature to 

temporarily quiet the alarm horn. During standby, the temperature is displayed in degrees F. 

________________________________________________________________________________________________________________________________________  

THE PARTS OF YOUR CO ALARM

1. Test Button
2. Acti Deactivation tab (back of unit).
3. Silence Button
4. (Behind Cover) Alarm Horn: 85dB audible alarm for test, alarm, and 

unit malfunction warning.
5. Peak level Button.
6. Digital Display with blue backlight.

1, 3, 5

 

4

6

2

________________________________________________________________________________________________________________________________________

UNDERSTANDING YOUR CO ALARM

Display glows and horn chirps when Alarm is first activated.
DIGITAL DISPLAY: All segments are turned on for a short time upon initial power.  

Then the temperature is displayed in degrees F.

________________________________________________________________________________________________________________________________________ 
ALARM RECEIVING BATTERY POWER

Horn is silent. Temperature will be displayed in degrees F.

________________________________________________________________________________________________________________________________________ 
DURING TESTING

One beep sounds when you press button. It is later followed by a 4 beep pattern that comes twice.
DIGITAL DISPLAY:  

Display glows and shows “tst”.  

Several ppm CO levels are also displayed and the alarm level is shown increasing.

Continued... 

© 2015 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc.   

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IMPORTANT! PLEASE READ CAREFULLY AND SAVE.

The warnings/limitations card and manual contains important information about your Carbon Monoxide (CO) Alarm’s 

operation. If you are installing this CO Alarm for use by others, you must leave this manual—or a copy of it—with the 

end user. Reference product card for additional information.

USER’S MANUAL

CARBON MONOXIDE ALARM

10 YEAR SEALED BATTERY OPERATED CARBON 

MONOXIDE ALARM WITH DIGITAL 

DISPLAY AND SILENCE FEATURE

Model CO710

CONFORMS TO

UL STD 2034

USING THE SILENCE FEATURE

•       The Silence Feature is for your convenience only and will not correct 

a CO problem. Always check your home for a potential problem after 

any alarm. Failure to do so can result in injury or death.

The Silence Feature is intended to temporarily silence your CO Alarm’s alarm 

horn while you correct the problem—it will not correct a CO problem. While the 

alarm is silenced it will continue to monitor the air for CO.

To Activate the Silence Feature: 

Press and hold the Silence button until the 

horn is silent.

Once you activate the Silence Feature: 

the Silence cycle will last 

approximately 4 minutes.

NOTE: 

After initial 4-minute Silence cycle, the CO Alarm re-evaluates present 

CO levels and responds accordingly. If CO levels remain potentially dangerous 

-or start rising higher- the horn will start sounding again.

________________________________________________________________________________________________________________________________________

SILENCING THE END OF LIFE SIGNAL

This silence feature can temporarily quiet the End of Life warning “chirp” for 8 hours up to 7 days. You can silence the End of Life warning “chirp” by pressing the 

Silence button. The horn will chirp, acknowledging that the End of Life feature has been activated.

________________________________________________________________________________________________________________________________________

TESTING & MAINTENANCE - WEEKLY TESTING

• 

Test the CO Alarm once a week. If the CO Alarm ever fails to test correctly, have it replaced immediately! If the CO Alarm is not working properly, it 

cannot alert you to a problem.

• 

DO NOT stand close to the Alarm when the horn is sounding. Exposure at close range may be harmful to your hearing. When testing, step away when 

horn starts sounding.

You can test this CO Alarm by pressing the Test button on the Alarm cover until alarm chirps. The alarm horn will sound: 4 beeps, a pause, then 4 beeps. The alarm 

sequence should last 5-6 seconds. If the unit does not alarm, make sure it has been activated correctly, and test again. If the unit still does not alarm, replace it 

immediately. 

 

•      DO NOT try fixing the Alarm yourself – this will void your warranty! If the CO Alarm is still not operating properly, and it is still under warranty,   

        please see “How to Obtain Warranty Service” in the Limited Warranty. Install a new CO Alarm immediately.
• 

NEVER use vehicle exhaust to test your Alarm! Exhaust may cause permanent damage and voids your warranty

________________________________________________________________________________________________________________________________________

REGULAR MAINTENANCE

To keep the CO Alarm in good working order:

• 

Test it every week using the Test button.

• 

Vacuum the CO Alarm cover once a month, using the soft brush attachment. Never use water, cleaners, or solvents, since these may damage the unit. Test the 

CO Alarm again after vacuuming.

• 

Please dispose of or recycle the Alarm properly, following any local regulations. Consult your local waste management authority or recycling 

organization to find an electronics recycling facility in your area. DO NOT DISPOSE OF ALARM IN FIRE. BATTERIES MAY EXPLODE OR LEAK.

• 

DO NOT spray cleaning chemicals or insect sprays directly on or near the CO Alarm. DO NOT paint over the CO Alarm. Doing so may cause permanent 

damage.

 

Household cleaners, aerosol chemicals, and other contaminants can affect the sensor. When using any of these materials near the CO Alarm, make sure the room is 

well ventilated.

While the detector is silenced:

If the CO Alarm... 

This means...

 

Is silent for only 4 minutes, then 

starts sounding loudly—4 beeps, 

pause, 4 beeps, pause

CO levels are still  

potentially dangerous.

If the CO Alarm...

This means...

 

Remains silent after you pressed 

the Silence button

CO levels are dropping.

HOW TO INSTALL YOUR CO ALARM

Read “Where To Install CO Alarms” before starting.
Before you start installation,

 find the pair of self-adhesive labels included with this CO Alarm. On each label write in the phone number of your emergency 

responder (like 911) and a qualified appliance technician. Place one label near the CO Alarm, and the other label in the “fresh air” location you plan to go if the alarm 

sounds.

NOTE: 

Activate alarm prior to mounting.

1. 

Activating the Battery.

 Move the activation switch to ON position. Utilize a small tool to help 

activate switch if needed. Once unit is activated, it cannot be turned off.

NOTE: 

Horn chirps, and all segments are turned on for a short time upon activation.

2.     Test the CO Alarm. See “Weekly Testing”. 

3.     

To Permanently Deactivate The Alarm. 

This CO Alarm contains a sealed, non-replaceable battery. 

Once it reaches the end of its service life, or after 10 years you must install a new CO Alarm. Deactivate 

the CO Alarm by inserting a tool below edge where shown and break tab. Then slide activation switch to 

DEACTIVATE mode.

NOTE:

 Once you deactivate this unit, it will not detect CO or alarm and cannot be reactivated.

4.     This CO Alarm can either be wall mounted or placed on a tabletop. If Alarm is placed on a tabletop, be sure the Alarm is no more than 3 feet (0.9 meter) from 

the floor to minimize the risk of causing permanent damage to the Alarm in the event that it is accidentally knocked to the ground.

________________________________________________________________________________________________________________________________________

TO MOUNT ON THE WALL

Tools you will need:

  pencil, drill with 3/16” or 5mm drill bit, flathead screwdriver, hammer, mounting template.

1.  Choose a location on the wall. Do not install the Alarm closer than 4”  (102 mm) from where the wall meets the ceiling.
2.  Hold the mounting guide template against the wall, and make a mark inside each keyhole where you will drill your mounting holes as shown in the diagram 

below.

3.  Use a 3/16” (5 mm) drill bit to drill through the marks you made for the mounting holes.
4.  Insert the plastic screw anchors into the mounting holes until they are flush with the wall. If necessary, tap them gently with a hammer.
5.  Insert the screws into the anchors until the screwhead is 1/8 inch (3 mm) away from the wall.
6.  Slide the CO Alarm onto the screws until you feel it click into place.
7.  Test the CO Alarm as described in “Weekly Testing.”

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IF YOUR CO ALARM SOUNDS

Actuation of your CO Alarm indicates the presence of carbon monoxide (CO) which can kill you. In other words, when your CO Alarm sounds, you must 

not ignore it!  

See “General Limitations of CO Alarms” for details included in the card packaged with alarm.

IF THE ALARM SIGNAL SOUNDS:

1.  Operate the Silence button.
2.  Call your emergency services, fire department or 911. Write down the number of your local emergency service here: 

_________________________________________________________

3.  Immediately move to fresh air—outdoors or by an open door or window. Do a head count to check that all persons are accounted for. Do not re-enter the 

premises, or move away from the open door or window until the emergency services responder has arrived, the premises have been aired out, and your CO 

Alarm remains in its normal condition.

4.  After following steps 1-3, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-3 and call a qualified appliance technician to investigate for 

sources of CO from fuel-burning equipment and appliances, and inspect for proper operation of this equipment. If problems are identified during this inspection 

have the equipment serviced immediately. Note any combustion equipment not inspected by the technician, and consult the manufacturers’ instructions, 

or contact the manufacturers directly, for more information about CO safety and this equipment. Make sure that motor vehicles are not, and have not, been 

operating in an attached garage or adjacent to the residence. Write down the number of a qualified appliance technician here:  

__________________________________________________________

3.875 inches

3.875 inches

Mounting Guide Template

5

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8

 inches (66.68 mm)

1. AGENCY APPROVED CLICHÉS, LABELS AND NAMEPLATES – ALL ARTWORK

CHANGES, OR REVISIONS MUST BE APPROVED BY COMPLIANCE 

ENGINEERING – AURORA. THERE ARE NO EXCEPTIONS!

2. ELECTRONIC FILES FOR ARTWORKS ARE STORED AND DISTRIBUTED AS

FOLLOWS:

•  ONE DISK FOR OUTSIDE VENDOR

•  ARENA FILE – AURORA MARKETING DEPARTMENT.

3. THIS APPROVED DOCUMENT IS REQUIRED FOR IQC INSPECTION OF 

VENDOR PARTS DELIVERED TO BRK BRANDS, INC. FOR ACCEPTANCE AND

APPROVAL, DELIVERED PARTS MUST MATCH THE RESPECTIVE ARTWORK

DOCUMENTATION.

4. REFER TO N04-3123-000  FOR PACKAGING AND CONSTRUCTION DETAILS.

5. 

NOTES:

PART NUMBER

N04-3123-000

ELECTRONIC FILE NO.

N043123000A

DATE CODE IS TO BE PERMANENTLY AND LEGIBLY STAMPED ON THE ALARM 

IN A CONTRASTING COLOR, MINIMUM HEIGHT IS 3/64TH INCH (1.2 MM) WITH 

FORMAT “YYYY MMM DD”

WHERE:

 

“YYYY” IS THE 4 DIGIT YEAR DESIGNATION,

 

“MMM” IS THE 3 DIGIT MONTH DESIGNATION

 

(FIRST 3 LETTERS OF THE MONTH), AND

 

“DD” IS THE 2 DIGIT DAY DESIGNATION

               

SCALE 1:1

MAINTENANCE AND TESTING:
ALARM IS SEALED, WITH NO SERVICEABLE PARTS.
BATTERY IS NOT REPLACEABLE. CONSTANT USE AT
HIGH OR LOW TEMPERATURES OR HIGH HUMIDITY
MAY REDUCE BATTERY LIFE. TEST WEEKLY.
GENTLY VACUUM MONTHLY.

CARBON MONOXIDE CANNOT BE SEEN OR
SMELLED BUT CAN KILL YOU. IF ALARM SIGNAL
SOUNDS: 1) OPERATE TEST / SILENCE BUTTON.
2) CALL YOUR EMERGENCY SERVICES 
(FIRE DEPARTMENT OR 911).
3) IMMEDIATELY MOVE TO FRESH AIR – OUTDOORS
OR BY AN OPEN DOOR / WINDOW.

1. TO ACTIVATE ALARM, 
MOVE SWITCH TO 

ON

 

POSITION.
2. PRESS TEST BUTTON 
TO ENSURE ALARM IS 
ACTIVATED.

TO DEACTIVATE 
BATTERY, BREAK 
AWAY TAB AND 
MOVE SWITCH TO 
DEACTIVATE 
POSITION. ONCE 
DEACTIVATED, THE 
ALARM CANNOT BE 
REACTIVATED AND 
MUST BE REPLACED.

ON

DEACTIVATE

MODEL NO. CO710

TO ORDER REPLACEMENT USER’S

MANUAL OR TO RETURN ALARM

CALL CONSUMER AFFAIRS :

1-800-323-9005 

 www.firstalert.com

CONFORMS TO

UL STD 2034

3055574

SINGLE

STATION

CO ALARM

ALARM GUIDE:

5 “CHIRPS” – END OF LIFE SIGNAL

3 “CHIRPS” – MALFUNCTION

4 BEEPS – CO ALARM

CO LEVEL (PPM)

RESPONSE TIME (MIN)

150

10 - 50

CARBON MONOXIDE SENSITIVITY

BRK BRANDS, INC.

25 SPUR DRIVE

EL PASO, TX 79906

MADE IN MEXICO   N04-3123-000

1

3

WHAT YOU NEED TO KNOW ABOUT CO - WHAT IS CO?

CO is an invisible, odorless, tasteless gas produced when fossil fuels do not burn completely, or are exposed to heat (usually fire). Electrical appliances typically do 

not produce CO. 

 

These fuels include:

 Wood, coal, charcoal, oil, natural gas, gasoline, kerosene, and propane.

Because CO may dissipate by the time an investigator arrives, it may be difficult to locate the source of CO. BRK Brands, Inc. shall not be obligated to pay for any 

carbon monoxide investigation or service call.

Fuel-burning appliances like:

 portable heater, gas or wood burning fireplace, gas kitchen range or cooktop, gas clothes dryer.

Damaged or insufficient venting:

 corroded or disconnected water heater vent pipe, leaking chimney pipe or flue, or cracked heat exchanger, blocked or clogged 

chimney opening.

Improper use of appliance/device:

 operating a barbecue grill or vehicle in an enclosed area (like a garage or screened porch).

Transient CO Problems: 

“transient” or on-again-off-again CO problems can be caused by outdoor conditions and other special circumstances.

A CO Alarm is not a substitute for proper maintenance of home appliances.

________________________________________________________________________________________________________________________________________

LIMITED WARRANTY

BRK Brands, Inc. (“BRK”) the maker of BRK® brand and First Alert® brand products, warrants that for a period of ten years from the date of purchase, this product will be free from defects in material and workmanship. 

BRK, at its option, will repair or replace this product or any component of the product found to be defective during the warranty period. Replacement will be made with a new or remanufactured product or component. If 

the product is no longer available, replacement may be made with a similar product of equal or greater value. This is your exclusive warranty.
This warranty is valid for the original retail purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof of purchase is required to obtain warranty performance. BRK 

dealers, service centers, or retail stores selling BRK products do not have the right to alter, modify or any way change the terms and conditions of this warranty.
This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper voltage or current, use contrary to the operating instructions, 

disassembly, repair or alteration by anyone other than BRK or an authorized service center. Further, the warranty does not cover acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included 

with this unit.
BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent prohibited by applicable law, any implied warranty of merchantability 

or fitness for a particular purpose is limited in duration to the duration of the above warranty. Some states, provinces, or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or 

limitations on how long an implied warranty lasts, so the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state, 

or province to province.

How to Obtain Warranty Service
Service: 

If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at 1-800-323-9005, 7:30 AM to 5:00 PM, Central Standard Time, Monday 

through Friday. To assist in serving you, please have the model number and date of purchase available when calling.  1301 Joe Battle, El Paso, TX 79936

Disposal: 

Waste electrical products should not be disposed of with regular household waste. Please recycle where facilities exist. Check local requirements for disposal of Li-Ion electronic devices.

The Alarm should be deactivated before disposal. See “To Permanently Deactivate The Alarm”. You can also return your Alarm to us for disposal. For return address see above. Please include a note confirming the product 

is being returned for disposal.

The alarm will also provide an audible End-of-Life Signal approximately 10 years after installation to remind you to replace the unit. The End-of-Life 

Signal can be silenced for up to 7 days. Do not deactivate alarm until you have a replacement.  

For your records, please record:

Date Purchased: ___________ Where Purchased: _______________       Date Installed: ____________/____________Month/Year  

 

Replace alarm 10 years after installation. Please write the date in the space provided:  _____________/____________Month/Year 

TROUBLESHOOTING GUIDE

PROBLEM...

THIS MEANS...

YOU SHOULD...

The horn sounds 3 “chirps” every minute.

MALFUNCTION SIGNAL. 

Based on its Self Test 

diagnostics, the unit has detected a malfunction. 

The unit needs to be replaced.

CO Alarms under warranty should be returned to  

manufacturer for replacement. See “Limited 

Warranty” for details.

The horn sounds 5 “chirps” every minute.

END OF LIFE SIGNAL. 

CO Alarm needs to be replaced.

Immediately replace the CO Alarm.

CO Alarm goes back into alarm 4 minutes after you 

press the Test/Silence button.

CO levels indicate a potentially dangerous situation.

IF YOU ARE FEELING SYMPTOMS OF CO  

POISONING, EVACUATE your home and call 911 or 

the Fire Department. If not, press the Test/Silence 

button again and 

keep ventilating your home.

CO Alarm sounds frequently even though no high  

levels of CO are revealed in an investigation.

The CO Alarm may be improperly located. Refer to 

“Where to Install CO Alarms.”

Relocate your alarm. If frequent alarms continue,  

have home rechecked for potential CO problems.  

You may be experiencing an intermittent CO 

problem.

If you have any questions that cannot be answered by reading this manual, call Consumer Affairs at 1-800-323-9005.

UNDERSTANDING YOUR CO ALARM 

Continued..

CO ALARM: 

Sensor has detected enough CO to trigger an alarm. Blue backlight glows and horn sounds 

loudly (repeating 4 beeps, pause). See “If Your CO AlarmSounds” for details. 

During an alarm, move 

everyone to a source of fresh air. DO NOT move the CO Alarm!
DIGITAL DISPLAY:

 “CO” alternating with the ppm number, a full level, and “EVACUATE”. 

________________________________________________________________________________________________________________________________________
CO ALARM REQUIRES SERVICE (MALFUNCTION SIGNAL)

The horn sounds 3 “chirps” every minute. CO Alarm needs to be replaced.  

DIGITAL DISPLAY: “Err” is displayed. 

________________________________________________________________________________________________________________________________________
CO ALARM END OF LIFE

The horn sounds 5 chirps every minute. CO Alarm needs to be replaced. 

DIGITAL DISPLAY: “End” is displayed. 

________________________________________________________________________________________________________________________________________ 

USING THE PEAK CO MEMORY

The CO Memory Feature lets you check the highest level of CO recorded during an alarm.

NOTE:

 These bars will not appear when CO accumulation is low. The bars will be displayed  

when unit is exposed for a longer time and CO accumulation is higher.

To check CO Memory:

1.  Press and release the Test Button until the peak CO level is displayed.

To clear CO Memory:

1.  Automatically resets after 24 hours.
2a.  Press and release Test Button until blue backlight glows.

2b.  Press and release Test Button to enter “clear mode”.

2c.  Press and release Test Button quickly one more time to clear.

NOTE: 

Must press and release. Press and hold will run into “Test Mode”.

NOTE:

 The highest CO level will be saved for 24 hours. DO NOT clear the CO Memory reading if you plan to call someone to investigate a CO problem! Clear the CO 

Memory reading only after the investigator has checked your home. If the investigator will not arrive within the 24 hour time period before the unit automatically 

resets, be sure to write down the peak level. 

________________________________________________________________________________________________________________________________________ 

INSTALLATION - WHERE TO INSTALL CO ALARMS

The National Fire Protection Association (NFPA) recommends that a CO Alarm should be centrally located outside of each separate sleeping area in the immediate 

vicinity of the bedrooms. For added protection, install additional CO Alarms in each separate bedroom, and on every level of your home. 

If your bedroom hallway is longer than 40 feet (12 meters), install a CO Alarm at BOTH ends of the hallway.

In a Single-level Home:

• 

Install at least one CO Alarm near or within each separate sleeping area.

• 

For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the 

furnace or fuel burning heatsource.

In a Multi-level Home:

• 

Install at least one CO Alarm near or within each separate sleeping area.

• 

For added protection, install at least one CO Alarm on each level of the home. If you have a 

basement, install that CO Alarm at the top of the basement stairs.

• 

For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the 

furnace or fuel burning heat source.

In a Mobile Home:

• 

Install CO Alarms on inside walls ONLY. Uninsulated outside walls and roofs of mobile homes often 

transfer heat and cold from outdoors.

GARAGE

SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS

BEDROOM

BEDROOM

HALL

LIVING ROOM

KITCHEN

BASEMENT

BEDROOM

REQUIRED TO MEET NFPA RECOMMENDATIONS

________________________________________________________________________________________________________________________________________ 

WHERE CO ALARMS SHOULD NOT BE INSTALLED

DO NOT install this CO Alarm:

• 

In garages, kitchens, furnace rooms, or in any extremely dusty, dirty or greasy areas.

• 

Closer than 20 feet (6 meters) from a furnace or other fuel burning heat source, or fuel burning appliances like a water heater.

• 

Within 5 feet (1.5 meters) of any cooking appliance.

• 

In extremely humid areas. This alarm should be at least 10 feet (3 meters) from a bath or shower, sauna, humidifier, vaporizer, dishwasher, laundry room, utility 

room or other source of high humidity.

• 

In areas where temperature is colder than 40˚ F (4.4˚ C) or hotter than 100˚ F (37.8˚ C). These areas include unconditioned crawl spaces, unfinished attics, 

uninsulated or poorly insulated ceilings, porches, and garages.

• 

In turbulent air, like near ceiling fans, heat vents, air conditioners, fresh air returns, or open windows. Blowing air may prevent CO from reaching the sensors.

• 

In direct sunlight.

HOW YOUR CO ALARM WORKS - GENERAL INFORMATION

• 

CO Alarm contains a sealed, non-replaceable battery. Once it reaches the end of its service life, or after 10 years—whichever comes first—you must 

install a new CO Alarm.

• 

High temperatures, low temperatures, high humidity, impact or dropping can adversely affect LCD displays.

A CO Alarm measures the CO levels in the air. It will alarm if CO levels rise quickly (if the heat exchanger on your furnace breaks, for example), or if CO is 

consistently present (a slow CO leak on a fuel-burning appliance).
This carbon monoxide alarm features a permanently installed sensor, digital display with blue backlight, and an 85 dB alarm horn. It also has a silence feature to 

temporarily quiet the alarm horn. During standby, the temperature is displayed in degrees F. 

________________________________________________________________________________________________________________________________________  

THE PARTS OF YOUR CO ALARM

1. Test Button
2. Acti Deactivation tab (back of unit).
3. Silence Button
4. (Behind Cover) Alarm Horn: 85dB audible alarm for test, alarm, and 

unit malfunction warning.
5. Peak level Button.
6. Digital Display with blue backlight.

1, 3, 5

 

4

6

2

________________________________________________________________________________________________________________________________________

UNDERSTANDING YOUR CO ALARM

Display glows and horn chirps when Alarm is first activated.
DIGITAL DISPLAY: All segments are turned on for a short time upon initial power.  

Then the temperature is displayed in degrees F.

________________________________________________________________________________________________________________________________________ 
ALARM RECEIVING BATTERY POWER

Horn is silent. Temperature will be displayed in degrees F.

________________________________________________________________________________________________________________________________________ 
DURING TESTING

One beep sounds when you press button. It is later followed by a 4 beep pattern that comes twice.
DIGITAL DISPLAY:  

Display glows and shows “tst”.  

Several ppm CO levels are also displayed and the alarm level is shown increasing.

Continued... 

© 2015 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc.    •   First Alert

®

 is registered trademark of The First Alert Trust •  3901 Liberty Street Road, Aurora, IL 60504-8122  

Consumer Affairs: (800) 323-9005 • www.firstalert.com   •   www.brkelectronics.com   •   Printed in Mexico • M08-0534-001 • 4/15

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CO710

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NAME

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MFG APPR.

ENG APPR.

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MATERIAL

INTERPRET GEOMETRIC

TOLERANCING PER:

DIMENSIONS ARE IN INCHES

TOLERANCES:

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ANGULAR: MACH

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TWO PLACE DECIMAL    

THREE PLACE DECIMAL  

APPLICATION

USED ON

NEXT ASSY

PROPRIETARY AND CONFIDENTIAL

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

<INSERT COMPANY NAME HERE>.  ANY 

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

<INSERT COMPANY NAME HERE> IS 

PROHIBITED.

A

DO NOT SCALE DRAWING

IMPORTANT! PLEASE READ CAREFULLY AND SAVE.

The warnings/limitations card and manual contains important information about your Carbon Monoxide (CO) Alarm’s 

operation. If you are installing this CO Alarm for use by others, you must leave this manual—or a copy of it—with the 

end user. Reference product card for additional information.

USER’S MANUAL

CARBON MONOXIDE ALARM

10 YEAR SEALED BATTERY OPERATED CARBON 

MONOXIDE ALARM WITH DIGITAL 

DISPLAY AND SILENCE FEATURE

Model CO710

CONFORMS TO

UL STD 2034

USING THE SILENCE FEATURE

•       The Silence Feature is for your convenience only and will not correct 

a CO problem. Always check your home for a potential problem after 

any alarm. Failure to do so can result in injury or death.

The Silence Feature is intended to temporarily silence your CO Alarm’s alarm 

horn while you correct the problem—it will not correct a CO problem. While the 

alarm is silenced it will continue to monitor the air for CO.

To Activate the Silence Feature: 

Press and hold the Silence button until the 

horn is silent.

Once you activate the Silence Feature: 

the Silence cycle will last 

approximately 4 minutes.

NOTE: 

After initial 4-minute Silence cycle, the CO Alarm re-evaluates present 

CO levels and responds accordingly. If CO levels remain potentially dangerous 

-or start rising higher- the horn will start sounding again.

________________________________________________________________________________________________________________________________________

SILENCING THE END OF LIFE SIGNAL

This silence feature can temporarily quiet the End of Life warning “chirp” for 8 hours up to 7 days. You can silence the End of Life warning “chirp” by pressing the 

Silence button. The horn will chirp, acknowledging that the End of Life feature has been activated.

________________________________________________________________________________________________________________________________________

TESTING & MAINTENANCE - WEEKLY TESTING

• 

Test the CO Alarm once a week. If the CO Alarm ever fails to test correctly, have it replaced immediately! If the CO Alarm is not working properly, it 

cannot alert you to a problem.

• 

DO NOT stand close to the Alarm when the horn is sounding. Exposure at close range may be harmful to your hearing. When testing, step away when 

horn starts sounding.

You can test this CO Alarm by pressing the Test button on the Alarm cover until alarm chirps. The alarm horn will sound: 4 beeps, a pause, then 4 beeps. The alarm 

sequence should last 5-6 seconds. If the unit does not alarm, make sure it has been activated correctly, and test again. If the unit still does not alarm, replace it 

immediately. 

 

•      DO NOT try fixing the Alarm yourself – this will void your warranty! If the CO Alarm is still not operating properly, and it is still under warranty,   

        please see “How to Obtain Warranty Service” in the Limited Warranty. Install a new CO Alarm immediately.
• 

NEVER use vehicle exhaust to test your Alarm! Exhaust may cause permanent damage and voids your warranty

________________________________________________________________________________________________________________________________________

REGULAR MAINTENANCE

To keep the CO Alarm in good working order:

• 

Test it every week using the Test button.

• 

Vacuum the CO Alarm cover once a month, using the soft brush attachment. Never use water, cleaners, or solvents, since these may damage the unit. Test the 

CO Alarm again after vacuuming.

• 

Please dispose of or recycle the Alarm properly, following any local regulations. Consult your local waste management authority or recycling 

organization to find an electronics recycling facility in your area. DO NOT DISPOSE OF ALARM IN FIRE. BATTERIES MAY EXPLODE OR LEAK.

• 

DO NOT spray cleaning chemicals or insect sprays directly on or near the CO Alarm. DO NOT paint over the CO Alarm. Doing so may cause permanent 

damage.

 

Household cleaners, aerosol chemicals, and other contaminants can affect the sensor. When using any of these materials near the CO Alarm, make sure the room is 

well ventilated.

While the detector is silenced:

If the CO Alarm... 

This means...

 

Is silent for only 4 minutes, then 

starts sounding loudly—4 beeps, 

pause, 4 beeps, pause

CO levels are still  

potentially dangerous.

If the CO Alarm...

This means...

 

Remains silent after you pressed 

the Silence button

CO levels are dropping.

HOW TO INSTALL YOUR CO ALARM

Read “Where To Install CO Alarms” before starting.
Before you start installation,

 find the pair of self-adhesive labels included with this CO Alarm. On each label write in the phone number of your emergency 

responder (like 911) and a qualified appliance technician. Place one label near the CO Alarm, and the other label in the “fresh air” location you plan to go if the alarm 

sounds.

NOTE: 

Activate alarm prior to mounting.

1. 

Activating the Battery.

 Move the activation switch to ON position. Utilize a small tool to help 

activate switch if needed. Once unit is activated, it cannot be turned off.

NOTE: 

Horn chirps, and all segments are turned on for a short time upon activation.

2.     Test the CO Alarm. See “Weekly Testing”. 

3.     

To Permanently Deactivate The Alarm. 

This CO Alarm contains a sealed, non-replaceable battery. 

Once it reaches the end of its service life, or after 10 years you must install a new CO Alarm. Deactivate 

the CO Alarm by inserting a tool below edge where shown and break tab. Then slide activation switch to 

DEACTIVATE mode.

NOTE:

 Once you deactivate this unit, it will not detect CO or alarm and cannot be reactivated.

4.     This CO Alarm can either be wall mounted or placed on a tabletop. If Alarm is placed on a tabletop, be sure the Alarm is no more than 3 feet (0.9 meter) from 

the floor to minimize the risk of causing permanent damage to the Alarm in the event that it is accidentally knocked to the ground.

________________________________________________________________________________________________________________________________________

TO MOUNT ON THE WALL

Tools you will need:

  pencil, drill with 3/16” or 5mm drill bit, flathead screwdriver, hammer, mounting template.

1.  Choose a location on the wall. Do not install the Alarm closer than 4”  (102 mm) from where the wall meets the ceiling.
2.  Hold the mounting guide template against the wall, and make a mark inside each keyhole where you will drill your mounting holes as shown in the diagram 

below.

3.  Use a 3/16” (5 mm) drill bit to drill through the marks you made for the mounting holes.
4.  Insert the plastic screw anchors into the mounting holes until they are flush with the wall. If necessary, tap them gently with a hammer.
5.  Insert the screws into the anchors until the screwhead is 1/8 inch (3 mm) away from the wall.
6.  Slide the CO Alarm onto the screws until you feel it click into place.
7.  Test the CO Alarm as described in “Weekly Testing.”

________________________________________________________________________________________________________________________________________

IF YOUR CO ALARM SOUNDS

Actuation of your CO Alarm indicates the presence of carbon monoxide (CO) which can kill you. In other words, when your CO Alarm sounds, you must 

not ignore it!  

See “General Limitations of CO Alarms” for details included in the card packaged with alarm.

IF THE ALARM SIGNAL SOUNDS:

1.  Operate the Silence button.
2.  Call your emergency services, fire department or 911. Write down the number of your local emergency service here: 

_________________________________________________________

3.  Immediately move to fresh air—outdoors or by an open door or window. Do a head count to check that all persons are accounted for. Do not re-enter the 

premises, or move away from the open door or window until the emergency services responder has arrived, the premises have been aired out, and your CO 

Alarm remains in its normal condition.

4.  After following steps 1-3, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-3 and call a qualified appliance technician to investigate for 

sources of CO from fuel-burning equipment and appliances, and inspect for proper operation of this equipment. If problems are identified during this inspection 

have the equipment serviced immediately. Note any combustion equipment not inspected by the technician, and consult the manufacturers’ instructions, 

or contact the manufacturers directly, for more information about CO safety and this equipment. Make sure that motor vehicles are not, and have not, been 

operating in an attached garage or adjacent to the residence. Write down the number of a qualified appliance technician here:  

__________________________________________________________

3.875 inches

3.875 inches

Mounting Guide Template

5

/

8

 inches (66.68 mm)

1. AGENCY APPROVED CLICHÉS, LABELS AND NAMEPLATES – ALL ARTWORK

CHANGES, OR REVISIONS MUST BE APPROVED BY COMPLIANCE 

ENGINEERING – AURORA. THERE ARE NO EXCEPTIONS!

2. ELECTRONIC FILES FOR ARTWORKS ARE STORED AND DISTRIBUTED AS

FOLLOWS:

•  ONE DISK FOR OUTSIDE VENDOR

•  ARENA FILE – AURORA MARKETING DEPARTMENT.

3. THIS APPROVED DOCUMENT IS REQUIRED FOR IQC INSPECTION OF 

VENDOR PARTS DELIVERED TO BRK BRANDS, INC. FOR ACCEPTANCE AND

APPROVAL, DELIVERED PARTS MUST MATCH THE RESPECTIVE ARTWORK

DOCUMENTATION.

4. REFER TO N04-3123-000  FOR PACKAGING AND CONSTRUCTION DETAILS.

5. 

NOTES:

PART NUMBER

N04-3123-000

ELECTRONIC FILE NO.

N043123000A

DATE CODE IS TO BE PERMANENTLY AND LEGIBLY STAMPED ON THE ALARM 

IN A CONTRASTING COLOR, MINIMUM HEIGHT IS 3/64TH INCH (1.2 MM) WITH 

FORMAT “YYYY MMM DD”

WHERE:

 

“YYYY” IS THE 4 DIGIT YEAR DESIGNATION,

 

“MMM” IS THE 3 DIGIT MONTH DESIGNATION

 

(FIRST 3 LETTERS OF THE MONTH), AND

 

“DD” IS THE 2 DIGIT DAY DESIGNATION

               

SCALE 1:1

MAINTENANCE AND TESTING:
ALARM IS SEALED, WITH NO SERVICEABLE PARTS.
BATTERY IS NOT REPLACEABLE. CONSTANT USE AT
HIGH OR LOW TEMPERATURES OR HIGH HUMIDITY
MAY REDUCE BATTERY LIFE. TEST WEEKLY.
GENTLY VACUUM MONTHLY.

CARBON MONOXIDE CANNOT BE SEEN OR
SMELLED BUT CAN KILL YOU. IF ALARM SIGNAL
SOUNDS: 1) OPERATE TEST / SILENCE BUTTON.
2) CALL YOUR EMERGENCY SERVICES 
(FIRE DEPARTMENT OR 911).
3) IMMEDIATELY MOVE TO FRESH AIR – OUTDOORS
OR BY AN OPEN DOOR / WINDOW.

1. TO ACTIVATE ALARM, 
MOVE SWITCH TO 

ON

 

POSITION.
2. PRESS TEST BUTTON 
TO ENSURE ALARM IS 
ACTIVATED.

TO DEACTIVATE 
BATTERY, BREAK 
AWAY TAB AND 
MOVE SWITCH TO 
DEACTIVATE 
POSITION. ONCE 
DEACTIVATED, THE 
ALARM CANNOT BE 
REACTIVATED AND 
MUST BE REPLACED.

ON

DEACTIVATE

MODEL NO. CO710

TO ORDER REPLACEMENT USER’S

MANUAL OR TO RETURN ALARM

CALL CONSUMER AFFAIRS :

1-800-323-9005 

 www.firstalert.com

CONFORMS TO

UL STD 2034

3055574

SINGLE

STATION

CO ALARM

ALARM GUIDE:

5 “CHIRPS” – END OF LIFE SIGNAL

3 “CHIRPS” – MALFUNCTION

4 BEEPS – CO ALARM

CO LEVEL (PPM)

RESPONSE TIME (MIN)

150

10 - 50

CARBON MONOXIDE SENSITIVITY

BRK BRANDS, INC.

25 SPUR DRIVE

EL PASO, TX 79906

MADE IN MEXICO   N04-3123-000

1

3

WHAT YOU NEED TO KNOW ABOUT CO - WHAT IS CO?

CO is an invisible, odorless, tasteless gas produced when fossil fuels do not burn completely, or are exposed to heat (usually fire). Electrical appliances typically do 

not produce CO. 

 

These fuels include:

 Wood, coal, charcoal, oil, natural gas, gasoline, kerosene, and propane.

Because CO may dissipate by the time an investigator arrives, it may be difficult to locate the source of CO. BRK Brands, Inc. shall not be obligated to pay for any 

carbon monoxide investigation or service call.

Fuel-burning appliances like:

 portable heater, gas or wood burning fireplace, gas kitchen range or cooktop, gas clothes dryer.

Damaged or insufficient venting:

 corroded or disconnected water heater vent pipe, leaking chimney pipe or flue, or cracked heat exchanger, blocked or clogged 

chimney opening.

Improper use of appliance/device:

 operating a barbecue grill or vehicle in an enclosed area (like a garage or screened porch).

Transient CO Problems: 

“transient” or on-again-off-again CO problems can be caused by outdoor conditions and other special circumstances.

A CO Alarm is not a substitute for proper maintenance of home appliances.

________________________________________________________________________________________________________________________________________

LIMITED WARRANTY

BRK Brands, Inc. (“BRK”) the maker of BRK® brand and First Alert® brand products, warrants that for a period of ten years from the date of purchase, this product will be free from defects in material and workmanship. 

BRK, at its option, will repair or replace this product or any component of the product found to be defective during the warranty period. Replacement will be made with a new or remanufactured product or component. If 

the product is no longer available, replacement may be made with a similar product of equal or greater value. This is your exclusive warranty.
This warranty is valid for the original retail purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof of purchase is required to obtain warranty performance. BRK 

dealers, service centers, or retail stores selling BRK products do not have the right to alter, modify or any way change the terms and conditions of this warranty.
This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper voltage or current, use contrary to the operating instructions, 

disassembly, repair or alteration by anyone other than BRK or an authorized service center. Further, the warranty does not cover acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included 

with this unit.
BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent prohibited by applicable law, any implied warranty of merchantability 

or fitness for a particular purpose is limited in duration to the duration of the above warranty. Some states, provinces, or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or 

limitations on how long an implied warranty lasts, so the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state, 

or province to province.

How to Obtain Warranty Service
Service: 

If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at 1-800-323-9005, 7:30 AM to 5:00 PM, Central Standard Time, Monday 

through Friday. To assist in serving you, please have the model number and date of purchase available when calling.  1301 Joe Battle, El Paso, TX 79936

Disposal: 

Waste electrical products should not be disposed of with regular household waste. Please recycle where facilities exist. Check local requirements for disposal of Li-Ion electronic devices.

The Alarm should be deactivated before disposal. See “To Permanently Deactivate The Alarm”. You can also return your Alarm to us for disposal. For return address see above. Please include a note confirming the product 

is being returned for disposal.

The alarm will also provide an audible End-of-Life Signal approximately 10 years after installation to remind you to replace the unit. The End-of-Life 

Signal can be silenced for up to 7 days. Do not deactivate alarm until you have a replacement.  

For your records, please record:

Date Purchased: ___________ Where Purchased: _______________       Date Installed: ____________/____________Month/Year  

 

Replace alarm 10 years after installation. Please write the date in the space provided:  _____________/____________Month/Year 

TROUBLESHOOTING GUIDE

PROBLEM...

THIS MEANS...

YOU SHOULD...

The horn sounds 3 “chirps” every minute.

MALFUNCTION SIGNAL. 

Based on its Self Test 

diagnostics, the unit has detected a malfunction. 

The unit needs to be replaced.

CO Alarms under warranty should be returned to  

manufacturer for replacement. See “Limited 

Warranty” for details.

The horn sounds 5 “chirps” every minute.

END OF LIFE SIGNAL. 

CO Alarm needs to be replaced.

Immediately replace the CO Alarm.

CO Alarm goes back into alarm 4 minutes after you 

press the Test/Silence button.

CO levels indicate a potentially dangerous situation.

IF YOU ARE FEELING SYMPTOMS OF CO  

POISONING, EVACUATE your home and call 911 or 

the Fire Department. If not, press the Test/Silence 

button again and 

keep ventilating your home.

CO Alarm sounds frequently even though no high  

levels of CO are revealed in an investigation.

The CO Alarm may be improperly located. Refer to 

“Where to Install CO Alarms.”

Relocate your alarm. If frequent alarms continue,  

have home rechecked for potential CO problems.  

You may be experiencing an intermittent CO 

problem.

If you have any questions that cannot be answered by reading this manual, call Consumer Affairs at 1-800-323-9005.

UNDERSTANDING YOUR CO ALARM 

Continued..

CO ALARM: 

Sensor has detected enough CO to trigger an alarm. Blue backlight glows and horn sounds 

loudly (repeating 4 beeps, pause). See “If Your CO AlarmSounds” for details. 

During an alarm, move 

everyone to a source of fresh air. DO NOT move the CO Alarm!
DIGITAL DISPLAY:

 “CO” alternating with the ppm number, a full level, and “EVACUATE”. 

________________________________________________________________________________________________________________________________________
CO ALARM REQUIRES SERVICE (MALFUNCTION SIGNAL)

The horn sounds 3 “chirps” every minute. CO Alarm needs to be replaced.  

DIGITAL DISPLAY: “Err” is displayed. 

________________________________________________________________________________________________________________________________________
CO ALARM END OF LIFE

The horn sounds 5 chirps every minute. CO Alarm needs to be replaced. 

DIGITAL DISPLAY: “End” is displayed. 

________________________________________________________________________________________________________________________________________ 

USING THE PEAK CO MEMORY

The CO Memory Feature lets you check the highest level of CO recorded during an alarm.

NOTE:

 These bars will not appear when CO accumulation is low. The bars will be displayed  

when unit is exposed for a longer time and CO accumulation is higher.

To check CO Memory:

1.  Press and release the Test Button until the peak CO level is displayed.

To clear CO Memory:

1.  Automatically resets after 24 hours.
2a.  Press and release Test Button until blue backlight glows.

2b.  Press and release Test Button to enter “clear mode”.

2c.  Press and release Test Button quickly one more time to clear.

NOTE: 

Must press and release. Press and hold will run into “Test Mode”.

NOTE:

 The highest CO level will be saved for 24 hours. DO NOT clear the CO Memory reading if you plan to call someone to investigate a CO problem! Clear the CO 

Memory reading only after the investigator has checked your home. If the investigator will not arrive within the 24 hour time period before the unit automatically 

resets, be sure to write down the peak level. 

________________________________________________________________________________________________________________________________________ 

INSTALLATION - WHERE TO INSTALL CO ALARMS

The National Fire Protection Association (NFPA) recommends that a CO Alarm should be centrally located outside of each separate sleeping area in the immediate 

vicinity of the bedrooms. For added protection, install additional CO Alarms in each separate bedroom, and on every level of your home. 

If your bedroom hallway is longer than 40 feet (12 meters), install a CO Alarm at BOTH ends of the hallway.

In a Single-level Home:

• 

Install at least one CO Alarm near or within each separate sleeping area.

• 

For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the 

furnace or fuel burning heatsource.

In a Multi-level Home:

• 

Install at least one CO Alarm near or within each separate sleeping area.

• 

For added protection, install at least one CO Alarm on each level of the home. If you have a 

basement, install that CO Alarm at the top of the basement stairs.

• 

For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the 

furnace or fuel burning heat source.

In a Mobile Home:

• 

Install CO Alarms on inside walls ONLY. Uninsulated outside walls and roofs of mobile homes often 

transfer heat and cold from outdoors.

GARAGE

SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS

BEDROOM

BEDROOM

HALL

LIVING ROOM

KITCHEN

BASEMENT

BEDROOM

REQUIRED TO MEET NFPA RECOMMENDATIONS

________________________________________________________________________________________________________________________________________ 

WHERE CO ALARMS SHOULD NOT BE INSTALLED

DO NOT install this CO Alarm:

• 

In garages, kitchens, furnace rooms, or in any extremely dusty, dirty or greasy areas.

• 

Closer than 20 feet (6 meters) from a furnace or other fuel burning heat source, or fuel burning appliances like a water heater.

• 

Within 5 feet (1.5 meters) of any cooking appliance.

• 

In extremely humid areas. This alarm should be at least 10 feet (3 meters) from a bath or shower, sauna, humidifier, vaporizer, dishwasher, laundry room, utility 

room or other source of high humidity.

• 

In areas where temperature is colder than 40˚ F (4.4˚ C) or hotter than 100˚ F (37.8˚ C). These areas include unconditioned crawl spaces, unfinished attics, 

uninsulated or poorly insulated ceilings, porches, and garages.

• 

In turbulent air, like near ceiling fans, heat vents, air conditioners, fresh air returns, or open windows. Blowing air may prevent CO from reaching the sensors.

• 

In direct sunlight.

HOW YOUR CO ALARM WORKS - GENERAL INFORMATION

• 

CO Alarm contains a sealed, non-replaceable battery. Once it reaches the end of its service life, or after 10 years—whichever comes first—you must 

install a new CO Alarm.

• 

High temperatures, low temperatures, high humidity, impact or dropping can adversely affect LCD displays.

A CO Alarm measures the CO levels in the air. It will alarm if CO levels rise quickly (if the heat exchanger on your furnace breaks, for example), or if CO is 

consistently present (a slow CO leak on a fuel-burning appliance).
This carbon monoxide alarm features a permanently installed sensor, digital display with blue backlight, and an 85 dB alarm horn. It also has a silence feature to 

temporarily quiet the alarm horn. During standby, the temperature is displayed in degrees F. 

________________________________________________________________________________________________________________________________________  

THE PARTS OF YOUR CO ALARM

1. Test Button
2. Acti Deactivation tab (back of unit).
3. Silence Button
4. (Behind Cover) Alarm Horn: 85dB audible alarm for test, alarm, and 

unit malfunction warning.
5. Peak level Button.
6. Digital Display with blue backlight.

1, 3, 5

 

4

6

2

________________________________________________________________________________________________________________________________________

UNDERSTANDING YOUR CO ALARM

Display glows and horn chirps when Alarm is first activated.
DIGITAL DISPLAY: All segments are turned on for a short time upon initial power.  

Then the temperature is displayed in degrees F.

________________________________________________________________________________________________________________________________________ 
ALARM RECEIVING BATTERY POWER

Horn is silent. Temperature will be displayed in degrees F.

________________________________________________________________________________________________________________________________________ 
DURING TESTING

One beep sounds when you press button. It is later followed by a 4 beep pattern that comes twice.
DIGITAL DISPLAY:  

Display glows and shows “tst”.  

Several ppm CO levels are also displayed and the alarm level is shown increasing.

Continued... 

© 2015 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc.    •   First Alert

®

 is registered trademark of The First Alert Trust •  3901 Liberty Street Road, Aurora, IL 60504-8122  

Consumer Affairs: (800) 323-9005 • www.firstalert.com   •   www.brkelectronics.com   •   Printed in Mexico • M08-0534-001 • 4/15

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CO710

SHEET 1 OF 2

UNLESS OTHERWISE SPECIFIED:

SCALE: 2:1

WEIGHT: 

REV

DWG.  NO.

C

SIZE

TITLE:

NAME

DATE

COMMENTS:

Q.A.

MFG APPR.

ENG APPR.

CHECKED

DRAWN

FINISH

MATERIAL

INTERPRET GEOMETRIC

TOLERANCING PER:

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL

ANGULAR: MACH

     BEND 

TWO PLACE DECIMAL    

THREE PLACE DECIMAL  

APPLICATION

USED ON

NEXT ASSY

PROPRIETARY AND CONFIDENTIAL

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

<INSERT COMPANY NAME HERE>.  ANY 

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

<INSERT COMPANY NAME HERE> IS 

PROHIBITED.

A

DO NOT SCALE DRAWING

IMPORTANT! PLEASE READ CAREFULLY AND SAVE.

The warnings/limitations card and manual contains important information about your Carbon Monoxide (CO) Alarm’s 

operation. If you are installing this CO Alarm for use by others, you must leave this manual—or a copy of it—with the 

end user. Reference product card for additional information.

USER’S MANUAL

CARBON MONOXIDE ALARM

10 YEAR SEALED BATTERY OPERATED CARBON 

MONOXIDE ALARM WITH DIGITAL 

DISPLAY AND SILENCE FEATURE

Model CO710

CONFORMS TO

UL STD 2034

USING THE SILENCE FEATURE

•       The Silence Feature is for your convenience only and will not correct 

a CO problem. Always check your home for a potential problem after 

any alarm. Failure to do so can result in injury or death.

The Silence Feature is intended to temporarily silence your CO Alarm’s alarm 

horn while you correct the problem—it will not correct a CO problem. While the 

alarm is silenced it will continue to monitor the air for CO.

To Activate the Silence Feature: 

Press and hold the Silence button until the 

horn is silent.

Once you activate the Silence Feature: 

the Silence cycle will last 

approximately 4 minutes.

NOTE: 

After initial 4-minute Silence cycle, the CO Alarm re-evaluates present 

CO levels and responds accordingly. If CO levels remain potentially dangerous 

-or start rising higher- the horn will start sounding again.

________________________________________________________________________________________________________________________________________

SILENCING THE END OF LIFE SIGNAL

This silence feature can temporarily quiet the End of Life warning “chirp” for 8 hours up to 7 days. You can silence the End of Life warning “chirp” by pressing the 

Silence button. The horn will chirp, acknowledging that the End of Life feature has been activated.

________________________________________________________________________________________________________________________________________

TESTING & MAINTENANCE - WEEKLY TESTING

• 

Test the CO Alarm once a week. If the CO Alarm ever fails to test correctly, have it replaced immediately! If the CO Alarm is not working properly, it 

cannot alert you to a problem.

• 

DO NOT stand close to the Alarm when the horn is sounding. Exposure at close range may be harmful to your hearing. When testing, step away when 

horn starts sounding.

You can test this CO Alarm by pressing the Test button on the Alarm cover until alarm chirps. The alarm horn will sound: 4 beeps, a pause, then 4 beeps. The alarm 

sequence should last 5-6 seconds. If the unit does not alarm, make sure it has been activated correctly, and test again. If the unit still does not alarm, replace it 

immediately. 

 

•      DO NOT try fixing the Alarm yourself – this will void your warranty! If the CO Alarm is still not operating properly, and it is still under warranty,   

        please see “How to Obtain Warranty Service” in the Limited Warranty. Install a new CO Alarm immediately.
• 

NEVER use vehicle exhaust to test your Alarm! Exhaust may cause permanent damage and voids your warranty

________________________________________________________________________________________________________________________________________

REGULAR MAINTENANCE

To keep the CO Alarm in good working order:

• 

Test it every week using the Test button.

• 

Vacuum the CO Alarm cover once a month, using the soft brush attachment. Never use water, cleaners, or solvents, since these may damage the unit. Test the 

CO Alarm again after vacuuming.

• 

Please dispose of or recycle the Alarm properly, following any local regulations. Consult your local waste management authority or recycling 

organization to find an electronics recycling facility in your area. DO NOT DISPOSE OF ALARM IN FIRE. BATTERIES MAY EXPLODE OR LEAK.

• 

DO NOT spray cleaning chemicals or insect sprays directly on or near the CO Alarm. DO NOT paint over the CO Alarm. Doing so may cause permanent 

damage.

 

Household cleaners, aerosol chemicals, and other contaminants can affect the sensor. When using any of these materials near the CO Alarm, make sure the room is 

well ventilated.

While the detector is silenced:

If the CO Alarm... 

This means...

 

Is silent for only 4 minutes, then 

starts sounding loudly—4 beeps, 

pause, 4 beeps, pause

CO levels are still  

potentially dangerous.

If the CO Alarm...

This means...

 

Remains silent after you pressed 

the Silence button

CO levels are dropping.

HOW TO INSTALL YOUR CO ALARM

Read “Where To Install CO Alarms” before starting.
Before you start installation,

 find the pair of self-adhesive labels included with this CO Alarm. On each label write in the phone number of your emergency 

responder (like 911) and a qualified appliance technician. Place one label near the CO Alarm, and the other label in the “fresh air” location you plan to go if the alarm 

sounds.

NOTE: 

Activate alarm prior to mounting.

1. 

Activating the Battery.

 Move the activation switch to ON position. Utilize a small tool to help 

activate switch if needed. Once unit is activated, it cannot be turned off.

NOTE: 

Horn chirps, and all segments are turned on for a short time upon activation.

2.     Test the CO Alarm. See “Weekly Testing”. 

3.     

To Permanently Deactivate The Alarm. 

This CO Alarm contains a sealed, non-replaceable battery. 

Once it reaches the end of its service life, or after 10 years you must install a new CO Alarm. Deactivate 

the CO Alarm by inserting a tool below edge where shown and break tab. Then slide activation switch to 

DEACTIVATE mode.

NOTE:

 Once you deactivate this unit, it will not detect CO or alarm and cannot be reactivated.

4.     This CO Alarm can either be wall mounted or placed on a tabletop. If Alarm is placed on a tabletop, be sure the Alarm is no more than 3 feet (0.9 meter) from 

the floor to minimize the risk of causing permanent damage to the Alarm in the event that it is accidentally knocked to the ground.

________________________________________________________________________________________________________________________________________

TO MOUNT ON THE WALL

Tools you will need:

  pencil, drill with 3/16” or 5mm drill bit, flathead screwdriver, hammer, mounting template.

1.  Choose a location on the wall. Do not install the Alarm closer than 4”  (102 mm) from where the wall meets the ceiling.
2.  Hold the mounting guide template against the wall, and make a mark inside each keyhole where you will drill your mounting holes as shown in the diagram 

below.

3.  Use a 3/16” (5 mm) drill bit to drill through the marks you made for the mounting holes.
4.  Insert the plastic screw anchors into the mounting holes until they are flush with the wall. If necessary, tap them gently with a hammer.
5.  Insert the screws into the anchors until the screwhead is 1/8 inch (3 mm) away from the wall.
6.  Slide the CO Alarm onto the screws until you feel it click into place.
7.  Test the CO Alarm as described in “Weekly Testing.”

________________________________________________________________________________________________________________________________________

IF YOUR CO ALARM SOUNDS

Actuation of your CO Alarm indicates the presence of carbon monoxide (CO) which can kill you. In other words, when your CO Alarm sounds, you must 

not ignore it!  

See “General Limitations of CO Alarms” for details included in the card packaged with alarm.

IF THE ALARM SIGNAL SOUNDS:

1.  Operate the Silence button.
2.  Call your emergency services, fire department or 911. Write down the number of your local emergency service here: 

_________________________________________________________

3.  Immediately move to fresh air—outdoors or by an open door or window. Do a head count to check that all persons are accounted for. Do not re-enter the 

premises, or move away from the open door or window until the emergency services responder has arrived, the premises have been aired out, and your CO 

Alarm remains in its normal condition.

4.  After following steps 1-3, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-3 and call a qualified appliance technician to investigate for 

sources of CO from fuel-burning equipment and appliances, and inspect for proper operation of this equipment. If problems are identified during this inspection 

have the equipment serviced immediately. Note any combustion equipment not inspected by the technician, and consult the manufacturers’ instructions, 

or contact the manufacturers directly, for more information about CO safety and this equipment. Make sure that motor vehicles are not, and have not, been 

operating in an attached garage or adjacent to the residence. Write down the number of a qualified appliance technician here:  

__________________________________________________________

3.875 inches

3.875 inches

Mounting Guide Template

5

/

8

 inches (66.68 mm)

1. AGENCY APPROVED CLICHÉS, LABELS AND NAMEPLATES – ALL ARTWORK

CHANGES, OR REVISIONS MUST BE APPROVED BY COMPLIANCE 

ENGINEERING – AURORA. THERE ARE NO EXCEPTIONS!

2. ELECTRONIC FILES FOR ARTWORKS ARE STORED AND DISTRIBUTED AS

FOLLOWS:

•  ONE DISK FOR OUTSIDE VENDOR

•  ARENA FILE – AURORA MARKETING DEPARTMENT.

3. THIS APPROVED DOCUMENT IS REQUIRED FOR IQC INSPECTION OF 

VENDOR PARTS DELIVERED TO BRK BRANDS, INC. FOR ACCEPTANCE AND

APPROVAL, DELIVERED PARTS MUST MATCH THE RESPECTIVE ARTWORK

DOCUMENTATION.

4. REFER TO N04-3123-000  FOR PACKAGING AND CONSTRUCTION DETAILS.

5. 

NOTES:

PART NUMBER

N04-3123-000

ELECTRONIC FILE NO.

N043123000A

DATE CODE IS TO BE PERMANENTLY AND LEGIBLY STAMPED ON THE ALARM 

IN A CONTRASTING COLOR, MINIMUM HEIGHT IS 3/64TH INCH (1.2 MM) WITH 

FORMAT “YYYY MMM DD”

WHERE:

 

“YYYY” IS THE 4 DIGIT YEAR DESIGNATION,

 

“MMM” IS THE 3 DIGIT MONTH DESIGNATION

 

(FIRST 3 LETTERS OF THE MONTH), AND

 

“DD” IS THE 2 DIGIT DAY DESIGNATION

               

SCALE 1:1

MAINTENANCE AND TESTING:
ALARM IS SEALED, WITH NO SERVICEABLE PARTS.
BATTERY IS NOT REPLACEABLE. CONSTANT USE AT
HIGH OR LOW TEMPERATURES OR HIGH HUMIDITY
MAY REDUCE BATTERY LIFE. TEST WEEKLY.
GENTLY VACUUM MONTHLY.

CARBON MONOXIDE CANNOT BE SEEN OR
SMELLED BUT CAN KILL YOU. IF ALARM SIGNAL
SOUNDS: 1) OPERATE TEST / SILENCE BUTTON.
2) CALL YOUR EMERGENCY SERVICES 
(FIRE DEPARTMENT OR 911).
3) IMMEDIATELY MOVE TO FRESH AIR – OUTDOORS
OR BY AN OPEN DOOR / WINDOW.

1. TO ACTIVATE ALARM, 
MOVE SWITCH TO 

ON

 

POSITION.
2. PRESS TEST BUTTON 
TO ENSURE ALARM IS 
ACTIVATED.

TO DEACTIVATE 
BATTERY, BREAK 
AWAY TAB AND 
MOVE SWITCH TO 
DEACTIVATE 
POSITION. ONCE 
DEACTIVATED, THE 
ALARM CANNOT BE 
REACTIVATED AND 
MUST BE REPLACED.

ON

DEACTIVATE

MODEL NO. CO710

TO ORDER REPLACEMENT USER’S

MANUAL OR TO RETURN ALARM

CALL CONSUMER AFFAIRS :

1-800-323-9005 

 www.firstalert.com

CONFORMS TO

UL STD 2034

3055574

SINGLE

STATION

CO ALARM

ALARM GUIDE:

5 “CHIRPS” – END OF LIFE SIGNAL

3 “CHIRPS” – MALFUNCTION

4 BEEPS – CO ALARM

CO LEVEL (PPM)

RESPONSE TIME (MIN)

150

10 - 50

CARBON MONOXIDE SENSITIVITY

BRK BRANDS, INC.

25 SPUR DRIVE

EL PASO, TX 79906

MADE IN MEXICO   N04-3123-000

1

3

WHAT YOU NEED TO KNOW ABOUT CO - WHAT IS CO?

CO is an invisible, odorless, tasteless gas produced when fossil fuels do not burn completely, or are exposed to heat (usually fire). Electrical appliances typically do 

not produce CO. 

 

These fuels include:

 Wood, coal, charcoal, oil, natural gas, gasoline, kerosene, and propane.

Because CO may dissipate by the time an investigator arrives, it may be difficult to locate the source of CO. BRK Brands, Inc. shall not be obligated to pay for any 

carbon monoxide investigation or service call.

Fuel-burning appliances like:

 portable heater, gas or wood burning fireplace, gas kitchen range or cooktop, gas clothes dryer.

Damaged or insufficient venting:

 corroded or disconnected water heater vent pipe, leaking chimney pipe or flue, or cracked heat exchanger, blocked or clogged 

chimney opening.

Improper use of appliance/device:

 operating a barbecue grill or vehicle in an enclosed area (like a garage or screened porch).

Transient CO Problems: 

“transient” or on-again-off-again CO problems can be caused by outdoor conditions and other special circumstances.

A CO Alarm is not a substitute for proper maintenance of home appliances.

________________________________________________________________________________________________________________________________________

LIMITED WARRANTY

BRK Brands, Inc. (“BRK”) the maker of BRK® brand and First Alert® brand products, warrants that for a period of ten years from the date of purchase, this product will be free from defects in material and workmanship. 

BRK, at its option, will repair or replace this product or any component of the product found to be defective during the warranty period. Replacement will be made with a new or remanufactured product or component. If 

the product is no longer available, replacement may be made with a similar product of equal or greater value. This is your exclusive warranty.
This warranty is valid for the original retail purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof of purchase is required to obtain warranty performance. BRK 

dealers, service centers, or retail stores selling BRK products do not have the right to alter, modify or any way change the terms and conditions of this warranty.
This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper voltage or current, use contrary to the operating instructions, 

disassembly, repair or alteration by anyone other than BRK or an authorized service center. Further, the warranty does not cover acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included 

with this unit.
BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent prohibited by applicable law, any implied warranty of merchantability 

or fitness for a particular purpose is limited in duration to the duration of the above warranty. Some states, provinces, or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or 

limitations on how long an implied warranty lasts, so the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state, 

or province to province.

How to Obtain Warranty Service
Service: 

If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at 1-800-323-9005, 7:30 AM to 5:00 PM, Central Standard Time, Monday 

through Friday. To assist in serving you, please have the model number and date of purchase available when calling.  1301 Joe Battle, El Paso, TX 79936

Disposal: 

Waste electrical products should not be disposed of with regular household waste. Please recycle where facilities exist. Check local requirements for disposal of Li-Ion electronic devices.

The Alarm should be deactivated before disposal. See “To Permanently Deactivate The Alarm”. You can also return your Alarm to us for disposal. For return address see above. Please include a note confirming the product 

is being returned for disposal.

The alarm will also provide an audible End-of-Life Signal approximately 10 years after installation to remind you to replace the unit. The End-of-Life 

Signal can be silenced for up to 7 days. Do not deactivate alarm until you have a replacement.  

For your records, please record:

Date Purchased: ___________ Where Purchased: _______________       Date Installed: ____________/____________Month/Year  

 

Replace alarm 10 years after installation. Please write the date in the space provided:  _____________/____________Month/Year 

TROUBLESHOOTING GUIDE

PROBLEM...

THIS MEANS...

YOU SHOULD...

The horn sounds 3 “chirps” every minute.

MALFUNCTION SIGNAL. 

Based on its Self Test 

diagnostics, the unit has detected a malfunction. 

The unit needs to be replaced.

CO Alarms under warranty should be returned to  

manufacturer for replacement. See “Limited 

Warranty” for details.

The horn sounds 5 “chirps” every minute.

END OF LIFE SIGNAL. 

CO Alarm needs to be replaced.

Immediately replace the CO Alarm.

CO Alarm goes back into alarm 4 minutes after you 

press the Test/Silence button.

CO levels indicate a potentially dangerous situation.

IF YOU ARE FEELING SYMPTOMS OF CO  

POISONING, EVACUATE your home and call 911 or 

the Fire Department. If not, press the Test/Silence 

button again and 

keep ventilating your home.

CO Alarm sounds frequently even though no high  

levels of CO are revealed in an investigation.

The CO Alarm may be improperly located. Refer to 

“Where to Install CO Alarms.”

Relocate your alarm. If frequent alarms continue,  

have home rechecked for potential CO problems.  

You may be experiencing an intermittent CO 

problem.

If you have any questions that cannot be answered by reading this manual, call Consumer Affairs at 1-800-323-9005.

UNDERSTANDING YOUR CO ALARM 

Continued..

CO ALARM: 

Sensor has detected enough CO to trigger an alarm. Blue backlight glows and horn sounds 

loudly (repeating 4 beeps, pause). See “If Your CO AlarmSounds” for details. 

During an alarm, move 

everyone to a source of fresh air. DO NOT move the CO Alarm!
DIGITAL DISPLAY:

 “CO” alternating with the ppm number, a full level, and “EVACUATE”. 

________________________________________________________________________________________________________________________________________
CO ALARM REQUIRES SERVICE (MALFUNCTION SIGNAL)

The horn sounds 3 “chirps” every minute. CO Alarm needs to be replaced.  

DIGITAL DISPLAY: “Err” is displayed. 

________________________________________________________________________________________________________________________________________
CO ALARM END OF LIFE

The horn sounds 5 chirps every minute. CO Alarm needs to be replaced. 

DIGITAL DISPLAY: “End” is displayed. 

________________________________________________________________________________________________________________________________________ 

USING THE PEAK CO MEMORY

The CO Memory Feature lets you check the highest level of CO recorded during an alarm.

NOTE:

 These bars will not appear when CO accumulation is low. The bars will be displayed  

when unit is exposed for a longer time and CO accumulation is higher.

To check CO Memory:

1.  Press and release the Test Button until the peak CO level is displayed.

To clear CO Memory:

1.  Automatically resets after 24 hours.
2a.  Press and release Test Button until blue backlight glows.

2b.  Press and release Test Button to enter “clear mode”.

2c.  Press and release Test Button quickly one more time to clear.

NOTE: 

Must press and release. Press and hold will run into “Test Mode”.

NOTE:

 The highest CO level will be saved for 24 hours. DO NOT clear the CO Memory reading if you plan to call someone to investigate a CO problem! Clear the CO 

Memory reading only after the investigator has checked your home. If the investigator will not arrive within the 24 hour time period before the unit automatically 

resets, be sure to write down the peak level. 

________________________________________________________________________________________________________________________________________ 

INSTALLATION - WHERE TO INSTALL CO ALARMS

The National Fire Protection Association (NFPA) recommends that a CO Alarm should be centrally located outside of each separate sleeping area in the immediate 

vicinity of the bedrooms. For added protection, install additional CO Alarms in each separate bedroom, and on every level of your home. 

If your bedroom hallway is longer than 40 feet (12 meters), install a CO Alarm at BOTH ends of the hallway.

In a Single-level Home:

• 

Install at least one CO Alarm near or within each separate sleeping area.

• 

For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the 

furnace or fuel burning heatsource.

In a Multi-level Home:

• 

Install at least one CO Alarm near or within each separate sleeping area.

• 

For added protection, install at least one CO Alarm on each level of the home. If you have a 

basement, install that CO Alarm at the top of the basement stairs.

• 

For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the 

furnace or fuel burning heat source.

In a Mobile Home:

• 

Install CO Alarms on inside walls ONLY. Uninsulated outside walls and roofs of mobile homes often 

transfer heat and cold from outdoors.

GARAGE

SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS

BEDROOM

BEDROOM

HALL

LIVING ROOM

KITCHEN

BASEMENT

BEDROOM

REQUIRED TO MEET NFPA RECOMMENDATIONS

________________________________________________________________________________________________________________________________________ 

WHERE CO ALARMS SHOULD NOT BE INSTALLED

DO NOT install this CO Alarm:

• 

In garages, kitchens, furnace rooms, or in any extremely dusty, dirty or greasy areas.

• 

Closer than 20 feet (6 meters) from a furnace or other fuel burning heat source, or fuel burning appliances like a water heater.

• 

Within 5 feet (1.5 meters) of any cooking appliance.

• 

In extremely humid areas. This alarm should be at least 10 feet (3 meters) from a bath or shower, sauna, humidifier, vaporizer, dishwasher, laundry room, utility 

room or other source of high humidity.

• 

In areas where temperature is colder than 40˚ F (4.4˚ C) or hotter than 100˚ F (37.8˚ C). These areas include unconditioned crawl spaces, unfinished attics, 

uninsulated or poorly insulated ceilings, porches, and garages.

• 

In turbulent air, like near ceiling fans, heat vents, air conditioners, fresh air returns, or open windows. Blowing air may prevent CO from reaching the sensors.

• 

In direct sunlight.

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