background image

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 C.

ALARM RECEIVING BATTERY POWER

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

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.

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 3 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.

2. 

a. Press and release Test Button until blue backlight glows. 

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

c. 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.

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. Constant exposure to high or low humidity, may reduce battery life.

• 

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 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.

GARAGE

SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS

BEDROOM

BEDROOM

HALL

LIVING ROOM

KITCHEN

BASEMENT

BEDROOM

REQUIRED TO MEET NFPA RECOMMENDATIONS

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

3

1

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

Printed in Mexico
M08-152718-CO710A-CA   

K3  

 8/16

Model CO710A

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 C.

THE PARTS OF YOUR CO ALARM

CONFORMS TO CSA 6.19-01

SCALE 1 : 1

D

C

B

A

B

C

D

1

2

3

4

5

6

7

8

8

7

6

5

4

3

2

1

E

F

E

F

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

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

© 2016 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc. • BRK Brands, Inc. is a subsidiary of Newell Brands Inc. (NYSE:NWL) • 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.ca • www.brkelectronics.com

K3

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.” 

 

 

3.875 inches

3.875 inches

Mounting Guide Template

2 5/8 inches (66.68 mm)

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. 

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.

2. 

Call your emergency services, fire department or 911. Write down the number of your local emergency service here:_________________________________________________

3. 

After following steps 1-2, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-2 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: __________________________________________________________

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.

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.

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 C.

ALARM RECEIVING BATTERY POWER

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

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.

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 3 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.

2. 

a. Press and release Test Button until blue backlight glows. 

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

c. 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.

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. Constant exposure to high or low humidity, may reduce battery life.

• 

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 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.

GARAGE

SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS

BEDROOM

BEDROOM

HALL

LIVING ROOM

KITCHEN

BASEMENT

BEDROOM

REQUIRED TO MEET NFPA RECOMMENDATIONS

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

3

1

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

Printed in Mexico
M08-152718-CO710A-CA   

K3  

 8/16

Model CO710A

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 C.

THE PARTS OF YOUR CO ALARM

CONFORMS TO CSA 6.19-01

SCALE 1 : 1

D

C

B

A

B

C

D

1

2

3

4

5

6

7

8

8

7

6

5

4

3

2

1

E

F

E

F

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

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

© 2016 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc. • BRK Brands, Inc. is a subsidiary of Newell Brands Inc. (NYSE:NWL) • 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.ca • www.brkelectronics.com

K3

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.” 

 

 

3.875 inches

3.875 inches

Mounting Guide Template

2 5/8 inches (66.68 mm)

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. 

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.

2. 

Call your emergency services, fire department or 911. Write down the number of your local emergency service here:_________________________________________________

3. 

After following steps 1-2, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-2 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: __________________________________________________________

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.

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.

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 C.

ALARM RECEIVING BATTERY POWER

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

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.

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 3 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.

2. 

a. Press and release Test Button until blue backlight glows. 

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

c. 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.

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. Constant exposure to high or low humidity, may reduce battery life.

• 

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 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.

GARAGE

SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS

BEDROOM

BEDROOM

HALL

LIVING ROOM

KITCHEN

BASEMENT

BEDROOM

REQUIRED TO MEET NFPA RECOMMENDATIONS

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

3

1

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

Printed in Mexico
M08-152718-CO710A-CA   

K3  

 8/16

Model CO710A

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 C.

THE PARTS OF YOUR CO ALARM

CONFORMS TO CSA 6.19-01

SCALE 1 : 1

D

C

B

A

B

C

D

1

2

3

4

5

6

7

8

8

7

6

5

4

3

2

1

E

F

E

F

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

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

© 2016 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc. • BRK Brands, Inc. is a subsidiary of Newell Brands Inc. (NYSE:NWL) • 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.ca • www.brkelectronics.com

K3

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.” 

 

 

3.875 inches

3.875 inches

Mounting Guide Template

2 5/8 inches (66.68 mm)

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. 

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.

2. 

Call your emergency services, fire department or 911. Write down the number of your local emergency service here:_________________________________________________

3. 

After following steps 1-2, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-2 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: __________________________________________________________

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.

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.

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 C.

ALARM RECEIVING BATTERY POWER

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

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.

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 3 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.

2. 

a. Press and release Test Button until blue backlight glows. 

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

c. 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.

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. Constant exposure to high or low humidity, may reduce battery life.

• 

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 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.

GARAGE

SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS

BEDROOM

BEDROOM

HALL

LIVING ROOM

KITCHEN

BASEMENT

BEDROOM

REQUIRED TO MEET NFPA RECOMMENDATIONS

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

3

1

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

Printed in Mexico
M08-152718-CO710A-CA   

K3  

 8/16

Model CO710A

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 C.

THE PARTS OF YOUR CO ALARM

CONFORMS TO CSA 6.19-01

SCALE 1 : 1

D

C

B

A

B

C

D

1

2

3

4

5

6

7

8

8

7

6

5

4

3

2

1

E

F

E

F

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

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

© 2016 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc. • BRK Brands, Inc. is a subsidiary of Newell Brands Inc. (NYSE:NWL) • 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.ca • www.brkelectronics.com

K3

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.” 

 

 

3.875 inches

3.875 inches

Mounting Guide Template

2 5/8 inches (66.68 mm)

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. 

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.

2. 

Call your emergency services, fire department or 911. Write down the number of your local emergency service here:_________________________________________________

3. 

After following steps 1-2, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-2 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: __________________________________________________________

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.

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.

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