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M08-0469-011   

K1

   09/14   Printed in Mexico

IMPORTANT! PLEASE READ CAREFULLY AND SAVE.

This user’s manual contains important information about your 

Combination Carbon Monoxide & Smoke Alarm’s operation.  

If you are installing this Alarm for use by others, you must leave  

this manual—or a copy of it—with the end user.

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COMBINATION CARBON MONOXIDE  

& SMOKE ALARM WITH VOICE & LOCATION

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USER’S MANUAL

Para el manual del usuario en español,  

por favor visite www.firstalert.com.

TABLE OF CONTENTS

Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Fire Safety Tips  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Basic Safety Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Step By Step Guide to Programming This Alarm . . . . . . . . . . . . . . . .2

What You Will See and Hear With This Alarm  . . . . . . . . . . . . . . . .2

Installation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Where to Install This Alarm  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Where This Alarm Should NOT Be Installed  . . . . . . . . . . . . . . . . . .3

How to Install This Alarm   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Optional Locking Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

If Your Smoke/CO Alarm Sounds  . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

What To Do First–Identify The Type Of Alarm . . . . . . . . . . . . . . . . .5

If the CO Alarm Sounds   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

If the Smoke Alarm Sounds   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Using the Silence Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Weekly Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Regular Maintenance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

What You Need To Know About CO  . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

What is CO?   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Symptoms of CO Poisoning  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Potential Sources of CO in the Home . . . . . . . . . . . . . . . . . . . . . . .7

How Can I Protect My Family From CO Poisoning? . . . . . . . . . . . . . .7

Regulatory Information For Smoke/CO Alarms   . . . . . . . . . . . . . . . 7-8

Regulatory Information for CO Alarms  . . . . . . . . . . . . . . . . . . . . . .7

Regulatory Information for Smoke Alarms  . . . . . . . . . . . . . . . . . 7-8

Recommended Locations for Smoke Alarms  . . . . . . . . . . . . . . . 7-8

About Smoke Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Special Compliance Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

General Limitations Of Smoke/CO Alarms   . . . . . . . . . . . . . . . . . . . . .9

Troubleshooting Guide  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11

Limited Warranty  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11

© 2014 BRK Brands, Inc.  All rights reserved.   

Distributed by BRK Brands, Inc. 

3901 Liberty Street Road, Aurora, IL 60504-8122 

Consumer Affairs: (800) 323-9005   •   www.firstalert.com

INTRODUCTION

FIRE SAFETY TIPS

Follow safety rules and prevent hazardous situations: 1) Use smoking  

materials properly. Never smoke in bed. 2) Keep matches or lighters 

away from children; 3) Store flammable materials in proper containers; 

4) Keep electrical appliances in good condition and don’t overload 

electrical circuits; 5) Keep stoves, barbecue grills, fireplaces and  

chimneys grease- and debris-free; 6) Never leave anything cooking  

on the stove unattended; 7) Keep portable heaters and open flames, 

like candles, away from flammable materials; 8) Don’t let rubbish  

accumulate.
Keep alarms clean, and test them weekly. Replace alarms immediately 

if they are not working properly. Smoke Alarms that do not work cannot 

alert you to a fire. Keep at least one working fire extinguisher on every 

floor, and an additional one in the kitchen. Have fire escape ladders or 

other reliable means of escape from an upper floor in case stairs are 

blocked.

BASIC SAFETY INFORMATION

 

•   Dangers, Warnings, and Cautions alert you to important  

operating instructions or to potentially hazardous situations.  

Pay special attention to these items.

  •   This Smoke/CO Alarm is approved for use in single-family  

residences. It is NOT designed for marine or RV use.

 

•   This combination Smoke/Carbon Monoxide Alarm has two 

separate alarms. The CO Alarm is not designed to detect fire 

or any other gas. It will only indicate the presence of carbon 

monoxide gas at the sensor. Carbon monoxide gas may be 

present in other areas. The Smoke Alarm will only indicate  

the presence of smoke that reaches the sensor. The Smoke 

Alarm is not designed to sense gas, heat or flames.

 

•   This Smoke/CO Alarm cannot operate without working  

batteries. Removing the batteries for any reason, or failing  

to replace the batteries at the end of their service life, 

removes your protection.

  •   NEVER ignore any alarm. See “If Your Smoke/CO Alarm 

Sounds” for more information on how to respond to an alarm. 

Failure to respond can result in injury or death.

  •   The Silence Features are for your convenience only and will 

not correct a problem. See “Using the Silence Features” for 

details. Always check your home for a potential problem after 

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

  •   Test this Smoke/CO Alarm once a week. If the Alarm ever fails 

to test correctly, have it replaced immediately! If the Alarm is 

not working properly, it cannot alert you to a problem.

  •   This product is intended for use in ordinary indoor locations 

of family living units. It is not designed to measure CO 

levels in compliance with Occupational Safety and Health 

Administration (OSHA) commercial or industrial standards. 

Individuals with medical conditions that may make them 

more sensitive to carbon monoxide may consider using 

warning devices which provide audible and visual signals  

for carbon monoxide concentrations under 30 ppm. For  

additional information on carbon monoxide and your medical 

condition contact your physician.

All First Alert

®

 Smoke Alarms conform to regulatory requirements, 

including UL217 and are designed to detect particles of combus-

tion. Smoke particles of varying number and size are produced 

in all fires.

Ionization technology is generally more sensitive than photo-

electric technology at detecting small particles, which tend  

to be produced in greater amounts by flaming fires, which 

consume combustible materials rapidly and spread quickly. Sources 

of these fires may include paper burning in a wastebasket, or a 

grease fire in the kitchen.

Photoelectric technology is generally more sensitive than  

ionization technology at detecting large particles, which tend  

to be produced in greater amounts by smoldering fires, which 

may smolder for hours before bursting into flame. Sources of these 

fires may include cigarettes burning in couches or bedding.

For maximum protection, use both types of Smoke Alarms on 

each level and in every bedroom of your home.

RECOMMENDED PLACEMENT

•  When installing on the wall, the top edge of Smoke Alarms should 

be placed between 4 inches (102 mm) and 12 inches (305 mm) 

from the wall/ceiling line.

•  When installing on the ceiling, place the alarm as close to the  

center as possible.

•  In either case, install at least 4 inches (102 mm) from where the  

wall and ceiling meet. See “Avoiding Dead Air Spaces” for more 

information.

NOTE:

 For any location, make sure no door or other obstruction could 

keep carbon monoxide or smoke from reaching the Alarm.

Installing Smoke/CO Alarms in Mobile Homes

For minimum security install one Smoke/CO Alarm as close to each 

sleeping area as possible. For more security, put one unit in each room. 

Many older mobile homes (especially those built before 1978) have little 

or no insulation. If your mobile home is not well insulated, or if you are 

unsure of the amount of insulation, it is important to install units on 

inside walls only.

WHERE THIS ALARM SHOULD NOT BE INSTALLED

Do NOT locate this Smoke/CO Alarm:

•  In garages, furnace rooms, crawl spaces and unfinished attics. 

Avoid extremely dusty, dirty or greasy areas.

•  Where combustion particles are produced. Combustion particles 

form when something burns. Areas to avoid include poorly ventilated 

kitchens, garages, and furnace rooms. Keep units at least 20 feet  

(6 meters) from the sources of combustion particles (stove, furnace, 

water heater, space heater) if possible. In areas where a 20-foot  

(6 meter) distance is not possible – in modular, mobile, or smaller 

homes, for example – it is recommended the Smoke Alarm be 

placed as far from these fuel-burning sources as possible. The 

placement recommendations are intended to keep these Alarms at 

a reasonable distance from a fuel-burning source, and thus reduce 

“unwanted” alarms. Unwanted alarms can occur if a Smoke Alarm 

is placed directly next to a fuel-burning source. Ventilate these 

areas as much as possible.

•  Within 5 feet (1.5 meters) of any cooking appliance. In air streams 

near kitchens. Air currents can draw cooking smoke into the smoke 

sensor and cause unwanted alarms. 

•  In extremely humid areas. This Alarm should be at least 10 feet  

(3 meters) from a shower, sauna, humidifier, vaporizer, dishwasher, 

laundry room, utility room, or other source of high humidity.

•  In direct sunlight.
•  In turbulent air, like near ceiling fans or open windows. Blowing air 

may prevent CO or smoke from reaching the sensors.

•  In areas where temperature is colder than 40˚ F (4.4˚ C) or hotter 

than 100˚F (37.8˚ C). These areas include non-airconditioned crawl 

spaces, unfinished attics, uninsulated or poorly insulated ceilings, 

porches, and garages.

•  In insect infested areas. Insects can clog the openings to the  

sensing chamber.

•  Less than 12 inches (305 mm) away from fluorescent lights. 

Electrical “noise” can interfere with the sensor.

•  In “dead air” spaces. See “Avoiding Dead Air Spaces”.

AVOIDING DEAD AIR SPACES

“Dead air” spaces may prevent smoke from reaching the Smoke/CO 

Alarm. To avoid dead air spaces, follow installation recommendations 

below.

On ceilings,

 install Smoke/CO Alarms as close to the center of the 

ceiling as possible. If this is not possible, install the Smoke/CO Alarm 

at least 4 inches (102 mm) from the wall or corner.

For wall mounting

 (if allowed by building codes), the top edge of 

Smoke/CO Alarms should be placed between 4 inches (102 mm) and  

12 inches (305 mm) from the wall/ceiling line, below typical “dead air” 

spaces.

On a peaked, gabled, or cathedral ceiling,

 install first Smoke/CO 

Alarm within 3 feet (0.9 meters) of the peak of the ceiling, measured 

horizontally. Additional Smoke/CO Alarms may be required depending 

on the length, angle, etc. of the ceiling’s slope. Refer to NFPA 72 for 

details on requirements for sloped or peaked ceilings.

INSTALLATION

WHERE TO INSTALL THIS ALARM

Minimum coverage for Smoke Alarms

, as recommended by the 

National Fire Protection Association (NFPA), is one Smoke Alarm 

on every floor, in every sleeping area, and in every bedroom (See 

“Regulatory Information For Smoke Alarms” for details on the NFPA 

recommendations).

For 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.

NOTE:

 For added protection, install an additional Smoke/CO Alarm at 

least 15 feet (4.6 meters) away from the furnace or fuel burning heat 

source where possible. In smaller homes or in manufactured homes 

where this distance cannot be maintained, install the Alarm as far away 

as possible from the furnace or other fuel burning source. Installing the 

Alarm closer than 15 feet (4.6 meters) will not harm the Alarm, but may 

increase the frequency of unwanted alarms.

In general, install combination Smoke and Carbon Monoxide 

Alarms:

•  On every level of your home, including finished attics and  

basements.

•  Inside every bedroom, especially if people sleep with the door  

partly or completely closed.

•  In the hall near every sleeping area. If your home has multiple 

sleeping areas, install a unit in each. If a hall is more than 40 feet 

(12 meters) long, install a unit at each end.

•  At the top of first-to-second floor stairs.
•  At the bottom of the basement stairs.
•  For additional coverage, install Alarms in all rooms, halls, and  

storage areas, where temperatures normally remain between 40˚ F 

and 100˚ F (4.4˚ C and 37.8˚ C).

SUGGESTED AREAS FOR INSTALLING

SMOKE ALARMS, CO ALARMS, AND COMBO UNITS

SMOKE ALARM WITH 

SILENCE FEATURE

CO ALARMS

BOTH, OR COMBINATION 

SMOKE/CO ALARMS

SMOKE ALARMS

KEY:

Suggested locations are based on 

NFPA recommendations (NFPA 72

for Smoke Alarms and NFPA 720 for 

Carbon Monoxide Alarms). Always 

refer to national and local codes 

before beginning any installation.

In new construction AC and AC/DC smoke alarms MUST 

be interconnected to meet NFPA recommendations. 

SILENCING THE END OF LIFE SIGNAL

This silence feature can temporarily quiet the End of Life warning 

“chirp” for up to 2 days. You can silence the End of Life warning “chirp” 

by pressing the Test/Silence button. The horn will chirp, acknowledging 

that the End of Life silence feature has been activated.
After approximately 2 days, the End of Life “chirp” will resume.

REGULAR MAINTENANCE

This unit has been designed to be as maintenance free as possible, but 

there are a few simple things you must do to keep it working properly.
•  Test it at least once a week.
•  Clean the Smoke/CO Alarm at least once a month; gently vacuum 

the outside of the Smoke/CO Alarm using your household vacuum’s 

soft brush attachment. A can of clean compressed air (sold at  

computer or office supply stores) may also be used. Follow  

manufacturer instructions for use. Test the Smoke/CO Alarm. Never 

use water, cleaners or solvents since they may damage the unit.

•  If the Smoke/CO Alarm becomes contaminated by excessive dirt, 

dust and/or grime, and cannot be cleaned to avoid unwanted 

alarms, replace the unit immediately.

•  Relocate the unit if it sounds frequent unwanted alarms.  

See “Where This Alarm Should Not Be Installed” for details.

Choosing a replacement battery:

Your Smoke/CO Alarm requires two standard AA alkaline batteries.  

The following batteries are acceptable as replacements: Eveready 

Energizer E91 or Duracell MN1500. 

These batteries are available  

at many local retail stores.

•  Always use the exact batteries specified by this User’s Manual.  

DO NOT use rechargeable batteries. Clean the battery contacts 

and also those of the device prior to battery installation. Install 

batteries correctly with regard to polarity (+ and -).

•  Please dispose of or recycle used batteries 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 BATTERIES 

IN FIRE. BATTERIES MAY EXPLODE OR LEAK.

•  Keep battery out of reach of children. In the event a battery is  

swallowed, immediately contact your poison control center, 

your physician, or the National Battery Ingestion hotline at  

202-625-3333 as serious injury may occur.

 

Actual battery service life depends on the Smoke/CO Alarm and the 

environment in which it is installed. All the batteries specified above  

are acceptable replacement batteries for this unit. Regardless of the 

manufacturer’s suggested battery life, you MUST replace the battery 

immediately once the unit starts “chirping” (the “low battery warning”).

WEEKLY TESTING

•  NEVER use an open flame of any kind to test this unit. You 

might accidentally damage or set fire to the unit or to your 

home. The built-in test switch accurately tests the unit’s  

operation as required by Underwriters Laboratories, Inc. (UL). 

NEVER use vehicle exhaust! Exhaust may cause permanent 

damage and voids your warranty.

•  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.

 

It is important to test this unit every week to make sure it is working  

properly. Using the test button is the recommended way to test this 

Smoke/CO Alarm.

You can test this Smoke/CO Alarm by pressing and holding the Test/

Silence button on the Alarm cover until Alarm 

Voice

 says “Testing” 

(typically 3-5 seconds).
During testing, you will see and hear the following sequence:
 

•   The Alarm 

Voice

 will say “Testing.” The 

Horn

 will sound 3 beeps, 

pause, 3 beeps. The Alarm 

Voice

 will say “Warning, evacuate 

smoke in [Location, example: “Hallway”]. Evacuate.” The 

Power 

LED

 flashes Red.

 

•   Next the 

Horn

 will sound 4 beeps, pause, 4 beeps. The Alarm 

Voice

 will say “Warning, evacuate carbon monoxide in [Location, 

example: “Hallway”]. Evacuate.” The 

LED

 flashes Red.

If the unit does not alarm, make sure the batteries are correctly installed, 

and test again. If the unit still does not alarm, replace it immediately.

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.
Common appliances are often sources of CO. If they are not properly 

maintained, are improperly ventilated, or malfunction, CO levels can 

rise quickly. CO is a real danger now that homes are more energy  

efficient. “Air-tight” homes with added insulation, sealed windows,  

and other weatherproofing can “trap” CO inside.

SYMPTOMS OF CO POISONING

These symptoms are related to CO POISONING and should be  

discussed with ALL household members.

Mild Exposure:

 Slight headache, nausea, vomiting, fatigue (“flu-like” 

symptoms).

Medium Exposure:

 Throbbing headache, drowsiness, confusion, fast 

heart rate.

Extreme Exposure:

 Convulsions, unconsciousness, heart and lung  

failure. Exposure to Carbon Monoxide can cause brain damage, death.

 

This CO Alarm measures exposure to CO over time. It alarms if CO  

levels are extremely high in a short period of time, or if CO levels reach 

a certain minimum over a long period of time. The CO Alarm generally 

sounds an alarm before the onset of symptoms in average, healthy 

adults. Why is this important? Because you need to be warned of a 

potential CO problem while you can still react in time. In many reported 

cases of CO exposure, victims may be aware that they are not feeling 

well, but become disoriented and can no longer react well enough to 

exit the building or get help. Also, young children and pets may be the 

first affected. The average healthy adult might not feel any symptoms 

when the CO Alarm sounds. However, people with cardiac or respiratory 

problems, infants, unborn babies, pregnant mothers, or elderly people 

can be more quickly and severely affected by CO. If you experience 

even mild symptoms of CO poisoning, consult your doctor immediately!

FINDING THE SOURCE OF CO AFTER AN ALARM

Carbon monoxide is an odorless, invisible gas, which often makes it 

difficult to locate the source of CO after an alarm. These are a few of 

the factors that can make it difficult to locate sources of CO:
 

•   House well ventilated before the investigator arrives.

 

•   Problem caused by “backdrafting.”

 

•   Transient CO problem caused by special circumstances.

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.

STEP BY STEP GUIDE TO PROGRAMMING  

THIS ALARM

Features:

•  Separate sensors to detect  

smoke and CO; the two alarm  

systems work independently

•  Voice with programmable  

location

•  Separate audible and visual  

signals to indicate alarm  

levels of smoke or CO

•  Powered by two “AA” batteries

•  Access door for easy battery 

replacement

Model 

PC1200V

CONFORMS TO

UL STD 217 

AND 

UL STD 2034

For First Time and When Changing Batteries

Action:

1.  Insert batteries (2, AA  

batteries).

Alarm Will Say:

“Welcome, First Alert Carbon  

Monoxide and Smoke Alarm.”
“No location programmed” if 

first time

 or “[Location, example: 

“Hallway”] location programmed” 

when changing batteries.
“To select location, press and 

hold test button now.”

2.  Press & Hold Test Button if  

you would like to program the 

location or change the location 

of the Alarm. Release button 

after Alarm responds.

“To save location, press and 

hold test button after location is 

heard.” Alarm will speak list of 

locations (see below).

3.  After you hear the location 

of where you are placing the 

Alarm, Press & Hold the Test 

Button.

“[Location, example: “Hallway”] 

location saved.”
If no location is chosen: “No  

location saved.”

Your Alarm has now been programmed for the location of your choice.
Available locations:   Basement 

 

Hallway 

 

Office 

 

Child’s Bedroom 

Kitchen 

 

Utility Room 

Dining Room  

Living Room 

Family Room  

Master Bedroom 

Guest Bedroom 

No Location

WHAT YOU WILL SEE AND HEAR WITH THIS ALARM

Under Normal Operations

Voice:

 Silent 

 

Power LED:

 Flashes Green once a 

minute

Horn:

 Silent 

When You Test the Alarm

Voice:

  “Testing.” “Warning, evacuate smoke in [Location, example: 

“Hallway”]. Evacuate.”

Horn:

 3 beeps, pause, 3 beeps, voice

Power LED:

 Flashes Red

 

followed by

Voice:

  “Warning, evacuate carbon monoxide in [Location, example: 

“Hallway”]. Evacuate.”

Horn:

 4 beeps, pause, 4 beeps, voice

LED:

 Flashes Red

If Battery Becomes Low

Voice:

  “Replace battery in [Location, example “Hallway”].” 

Repeated every 5 hours

Horn:

 chirps once a minute

Power LED:

 Flashes Green approximately once a minute

If Alarm is Not Operating Properly

Voice:

  “Detector error in [Location, example “Hallway”], please see 

manual.” Repeated every 5 hours

Horn:

 3 chirps every minute

LED:

 Three Green flashes approximately once a minute

Alarm has reached its End of Life

Voice:

  “Detector error in [Location, example “Basement”], please 

see manual.” Repeated every 5 hours

Horn:

 5 chirps every minute

LED:

 Five Green flashes approximately once a minute

Alarm Levels of CO are Detected

Voice:

  “Warning, evacuate carbon monoxide in [Location, example: 

“Hallway”]. Evacuate.” “____ ppm.”

Horn:

 4 beeps, pause, 4 beeps, voice

*

LED:

 Flashes Red

*NOTE:

 If unit goes into CO alarm, the regular 4 beeps-brief pause 

cycle will repeat for four minutes. After four minutes, the pause will 

increase to one minute.

Smoke is Detected

Voice:

  “Warning, evacuate smoke in [Location, example: 

“Hallway”]. Evacuate.”

Horn:

 3 beeps, pause, 3 beeps, voice

LED:

 Flashes Red

Smoke Alarm is Silenced

Voice:

 Silent.

Horn:

 Off

LED:

 Flashes Red

CO Alarm is Silenced

Voice:

 Silent.

Horn:

 Off

LED:

 Flashes Red

IF YOUR SMOKE/CO ALARM SOUNDS

WHAT TO DO FIRST–IDENTIFY THE TYPE OF ALARM

Type of Alarm

Carbon Monoxide (CO)  

What You See and Hear
Voice:

  “Warning, evacuate carbon 

monoxide in [Location,  

example: “Hallway”]. 

Evacuate.” “____ ppm.”

Horn:

  4 beeps, pause, 4 beeps, 

voice

LED:

 Flashes Red

Smoke

Voice:

  “Warning, evacuate smoke 

in [Location, example: 

“Hallway”]. Evacuate.”

Horn:

  3 beeps, pause, 3 beeps, 

voice

LED

: Flashes Red

IF THE 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!
IF THE CO ALARM SIGNAL SOUNDS:

1.  Press the Test/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:

 _____________________________________________________________

NOTE:

 A qualified appliance technician is defined as “a person, firm,  

corporation, or company that either in person or through a 

representative, is engaged in and responsible for the installation, 

testing, servicing, or replacement of heating, ventilation, air conditioning 

(HVAC) equipment, combustion appliances and equipment, and/or gas 

fireplaces or other decorative combustion equipment.”

“ALARM-MOVE TO FRESH AIR”

If you hear the CO alarm horn and the CO red light is flashing, 

move everyone to a source of fresh air.  

DO NOT remove the batteries!

IF THE SMOKE ALARM SOUNDS

RESPONDING TO AN ALARM

•  If the unit alarms and you are not testing the unit, it is warning 

you of a potentially dangerous situation that requires your 

immediate attention. NEVER ignore any alarm. Ignoring the 

alarm may result in injury or death.

•  Never remove the batteries from a battery operated Smoke/CO  

Alarm to stop an unwanted alarm (caused by cooking smoke, 

etc.). Removing batteries disables the alarm so it cannot sense 

smoke, and removes your protection. Instead open a window 

or fan the smoke away from the unit. The alarm will reset 

automatically.

•  If the unit alarms get everyone out of the house immediately.

WHAT TO DO IN CASE OF FIRE

•  Don’t panic; stay calm. Follow your family escape plan.
•  Get out of the house as quickly as possible. Don’t stop to get  

dressed or collect anything.

•   Feel doors with the back of your hand before opening them. If a 

door is cool, open it slowly. Don’t open a hot door. Keep doors 

and windows closed, unless you must escape through them.

•  Cover your nose and mouth with a cloth (preferably damp).  

Take short, shallow breaths.

•  Meet at your planned meeting place outside your home, and  

do a head count to make sure everybody got out safely.

•  Call the Fire Department as soon as possible from outside.  

Give your address, then your name.

•  Never go back inside a burning building for any reason.
•  Contact your Fire Department for ideas on making your home 

safer.

 

Alarms have various limitations. See “General Limitations of 

Smoke/CO Alarms” for details.

USING THE SILENCE FEATURES

 

Never remove the batteries to quiet an unwanted alarm. Removing 

the batteries disables the alarm and removes your protection.

The Silence Feature is intended to temporarily silence the horn while 

you identify and correct the problem. Do not use the Silence Feature 

in emergency situations. It will not correct a CO problem or extinguish 

a fire.
The Silence Feature can temporarily quiet an unwanted alarm for several 

minutes. You can silence this Smoke/CO Alarm by pressing the Test/

Silence button on the alarm cover for at least 3-5 seconds.
After the Test/Silence button is released, the Red LED blinks during the 

silence mode.

When the Smoke Alarm is 

Silenced     

When the CO Alarm is Silenced

T

he Smoke Alarm will remain 

silent for up to 15 minutes, then 

return to normal operation.
If the smoke has not cleared–or 

continues to increase–the device 

will go back into alarm.

The CO Alarm will remain silent 

for up to 4 minutes.
After 4 minutes, if CO levels 

remain potentially dangerous the 

horn will start sounding again.

AFTER AN ALARM

After the emergency responders arrive, the premises aired out, and 

your CO Alarm remains in its normal condition, you can check what  

the highest carbon monoxide level sensed was:

Action:

1. Press & Hold Test Button

Alarm Will Say:

“Highest carbon monoxide level 

was ___ ppm. Please see manual.”
“To clear highest carbon monoxide 

level, press and hold test button 

now.”

2.  Press & Hold Test Button, if you 

would like to clear the highest 

level sensed.

     If you would like to keep the  

highest level in memory, do not 

press anything.

“Highest carbon monoxide level 

cleared.”

Alarm will say nothing.

HOW TO INSTALL THIS ALARM

 

This combination Smoke/CO Alarm was designed to be mounted 

on the ceiling or wall. It is not a tabletop device.

 You must install this 

device on the ceiling or wall as outlined below. Read “Where To Install 

This Alarm” before starting.

1   Test/Silence  Button
2   Dual Power indicator light 

and Alarm indicator:  

Green LED provides visual 

indication of an Alarm 

Memory condition;  

Red LED provides visual 

indication of an Alarm and 

Hush modes

3 Speaker

PARTS OF THIS SMOKE/CO ALARM

1   Mounting  bracket
2   Mounting  slots
3  Turn this way to remove
4  Turn this way to attach
5   Battery door, install  

batteries here

1

2

3

1

2

3

Tools you will need:

  pencil, drill with 3/16” or 5mm drill bit,  

flathead screwdriver, hammer.

 

•    Do not connect this unit to any other alarm or auxiliary device. 

It is a single-station unit that cannot be linked to other 

devices. Connecting anything else to this unit may prevent it 

from working properly.

  •    Do not install this unit over an electrical junction box. Air 

currents around junction boxes can prevent smoke from 

reaching the sensing chamber and prevent the unit from 

alarming. Only AC powered units are intended for installation 

over junction boxes.

FOLLOW THESE SIMPLE STEPS:

1.  Hold base firmly and twist the mounting bracket clockwise to  

separate it from the base.

2.  Hold the mounting bracket against the 

ceiling (or wall) so the two  

clusters of universal mounting holes are 

aligned approximately at the 9:00 and 3:00 

o’clock positions. See image. Choose one 

of the  

three sets of holes shown, A, B or C (see 

image) and trace around one of the sets. 

Be sure to choose a top and bottom slot 

on opposite sides so you can rotate the 

universal mounting bracket into position 

later. This will make it easier in the future 

to remove the mounting bracket without 

completely removing the screws.

3.  Put the unit where it won’t get covered with dust when you drill the 

mounting holes.

4.  Using a 3/16” (5 mm) drill bit, drill a hole through the center of the 

oval outlines you traced.

5.  Insert the plastic screw anchors (in the plastic bag with screws)  

into the holes. Tap the screw anchors gently with a hammer, if  

necessary, until they are flush with the ceiling or wall.

6.  Install the screws but do not tighten completely. Attach the  

mounting bracket by aligning the screws in the open portion of  

the universal mounting slots and rotating the bracket into place. 

Tighten the screws until they are snug to secure the bracket.  

Do not over tighten.

7. 

Install the batteries (included).

 Open the battery door. Match the 

terminals on the ends of each battery with the terminals on the 

unit. Match “+” to “+” and “-” to “-.” Push the batteries in until they 

snap securely and cannot be shaken loose. If the batteries are not 

snapped in completely, the unit cannot receive battery power.

NOTE: After you install the batteries, the power indicator light may 

flash. (If the unit alarms, the light will blink rapidly, and the horn will 

repeatedly sound 3 beeps, pause, 3 beeps.)

8.  Position the base of the Alarm over the mounting bracket and turn. 

Turn the Alarm clockwise until the unit is in place.

9.  Test the Alarm. See “Weekly Testing.”

Mounting Hole Sets

A

A

C

B

B

C

1

2

3

1

2

3

OPTIONAL LOCKING FEATURE

The optional locking feature is designed to prevent unauthorized removal 

of the alarm. It is not necessary to activate the lock in single-family 

households where unauthorized alarm 

removal is not a concern.  
Tools you will need:  Needle-nose 

pliers or utility knife • Standard flathead 

screwdriver

The feature uses a locking pin which is 

molded into the mounting bracket.  Remove 

locking pin by using needle-nose pliers or 

a utility knife. 

To permanently remove the locking pin, insert a flathead screwdriver 

between the locking pin and the lock and pry the pin out of the lock.  

TO LOCK THE MOUNTING BRACKET 

1. Using needle-nose pliers, detach the pin from the 

mounting bracket.

2. Insert the locking pin through the hold on the 

back of the smoke alarm as shown in 

the diagram.

3. When you attach the alarm to the 

mounting bracket the locking pin’s head 

will fit into a notch on the bracket.  

Locking Pin

TO UNLOCK THE MOUNTING BRACKET 

1. Insert a flathead screwdriver in between the 

mounting bracket and the locking pin.

2. Pry the alarm away from the bracket by 

pushing up the screwdriver and turning the alarm counterclockwise (left) at 

the same time.

2

1

4

3

SILENCING THE LOW BATTERY WARNING

This silence feature can temporarily quiet the low battery warning 

“chirp” for up to 8 hours. You can silence the low battery warning 

“chirp” by pressing the Test/Silence button on the alarm cover.
Once the low battery warning “chirp” silence feature is activated, the 

unit continues to flash the Green light once a minute for 8 hours. After 

8 hours, the low battery “chirp” will resume. 

Replace the batteries as 

soon as possible; this unit will not operate without battery power!

To deactivate this feature: 

Press the Test/Silence button again. The 

unit will go into Test Mode and the low battery warning will resume (LED 

flashes and unit sounds “chirp” once a minute).

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