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ABOUT SMOKE ALARMS

Battery (DC) operated Smoke Alarms: 

Provide protection even when  

electricity fails, provided the batteries are fresh and correctly installed. 

Units are easy to install, and do not require professional installation.

AC powered Smoke Alarms: 

Can be interconnected so if one unit 

senses smoke, all units alarm. They do not operate if electricity fails.  

AC with battery (DC) back-up: 

will operate if electricity fails, provided 

the batteries are fresh and correctly installed. AC and AC/DC units 

must be installed by a qualified electrician.

Smoke/CO Alarms for Solar or Wind Energy users and battery 

backup power systems:

 AC powered Smoke/CO Alarms should only 

be operated with true or pure sine wave inverters. Operating this Alarm 

with most battery-powered UPS (uninterruptible power supply) products 

or square wave or “quasi sine wave” inverters 

will damage the Alarm

If you are not sure about your inverter or UPS type, please consult with 

the manufacturer to verify.

Smoke Alarms for the hearing impaired: 

Special purpose Smoke 

Alarms should be installed for the hearing impaired. They include a  

visual alarm and an audible alarm horn, and meet the requirements of 

the Americans With Disabilities Act. Can be interconnected so if one  

unit senses smoke, all units alarm.

Smoke alarms are not to be used with detector guards

 unless the  

combination has been evaluated and found suitable for that purpose.
All these Smoke Alarms are designed to provide early warning of fires 

if located, installed and cared for as described in the user’s manual, 

and if smoke reaches the Alarm. If you are unsure which type of 

Smoke Alarm to install, refer to National Fire Protection Association 

(NFPA) Standard 72 (National Fire Alarm and Signaling Code) and 

NFPA 101 (Life Safety Code). National Fire Protection Association, 

One Batterymarch Park, Quincy, MA 02269-9101. Local building codes 

may also require specific units in new construction or in different areas 

of the home.

AGENCY PLACEMENT RECOMMENDATIONS

Standards: 

Underwriters Laboratories Inc. Single and Multiple Station 

Smoke Alarms 217.

NFPA 72 Chapter 29

“For your information, the 

National Fire Alarm and Signaling Code

NFPA 72, reads as follows:”

29.5.1* Required Detection.

29.5.1.1*

 Where required by other governing laws, codes, or standards 

for a specific type of occupancy, approved single and multiple-station 

smoke alarms shall be installed as follows:
(1)*In all sleeping rooms and guest rooms
(2)* Outside of each separate dwelling unit sleeping area, within 21 ft 

(6.4 m) of any door to a sleeping room, with the distance measured 

along a path of travel

(3) On every level of a dwelling unit, including basements
(4)  On every level of a residential board and care occupancy (small 

facility), including basements and excluding crawl spaces and  

unfinished attics

(5)*In the living area(s) of a guest suite
(6)  In the living area(s) of a residential board and care occupancy (small 

facility)

(Reprinted with permission from NFPA 72

®

, National Fire Alarm and 

Signaling Code Copyright © 2010 National Fire Protection Association, 

Quincy, MA 02269. This reprinted material is not the complete and  

official position of the National Fire Protection Association, on the  

referenced subject which is represented only by the standard in its 

entirety), (National Fire Alarm and Signaling Code

®

 and NFPA 72

®

 are 

registered trademarks of the National Fire Protection Association, Inc., 

Quincy, MA 02269).

California State Fire Marshal (CSFM)

Early warning detection is best achieved by the installation of fire 

detection equipment in all rooms and areas of the household as follows: 

A Smoke Alarm installed in each separate sleeping area (in the vicinity, 

but outside bedrooms), and Heat or Smoke Alarms in the living rooms, 

dining rooms, bedrooms, kitchens, hallways, finished attics, furnace 

rooms, closets, utility and storage rooms, basements, and attached 

garages.

This Smoke/CO Alarm is intended for residential use. It is not intended 

for use in industrial applications where Occupational Safety and Health 

Administration (OSHA) requirements for Carbon Monoxide Alarms must 

be met. The Smoke Alarm portion of this device is not intended to alert 

hearing impaired residents. Special purpose Smoke Alarms should be 

installed for hearing impaired residents (CO Alarms are not yet available 

for the hearing impaired).

Smoke/CO Alarms may not waken all individuals.

 Practice the 

escape plan at least twice a year, making sure that everyone is involved 

– from kids to grandparents. Allow children to master fire escape  

planning and practice before holding a fire drill at night when they are 

sleeping. If children or others do not readily waken to the sound of the 

Smoke/CO Alarm, or if there are infants or family members with mobility 

limitations, make sure that someone is assigned to assist them in fire 

drill and in the event of an emergency. It is recommended that you hold 

a fire drill while family members are sleeping in order to determine their 

response to the sound of the Smoke/CO Alarm while sleeping and  

to determine whether they may need assistance in the event of an 

emergency.

Smoke/CO Alarms cannot work without power.

 Battery operated 

units cannot work if the batteries are missing, disconnected or dead, if 

the wrong type of batteries are used, or if the batteries are not installed 

correctly. AC units cannot work if the AC power is cut off for any reason 

(open fuse or circuit breaker, failure along a power line or at a power 

station, electrical fire that burns the electrical wires, etc.). If you are  

concerned about the limitations of battery or AC power, install both 

types of units.

This Smoke/CO Alarm will not sense smoke or CO that does not 

reach the sensors.

 It will only sense smoke or CO at the sensor. 

Smoke or CO may be present in other areas. Doors or other obstructions 

may affect the rate at which CO or smoke reaches the sensors.  

If bedroom doors are usually closed at night, we recommend you 

install an alarm device (Combination CO and Smoke Alarm, or separate 

CO Alarms and Smoke Alarms) in each bedroom and in the hallway 

between them.

This Smoke/CO Alarm may not sense smoke or CO on another 

level of the home. 

Example: This alarm device, installed on the second 

floor, may not sense smoke or CO in the basement. For this reason, 

one alarm device may not give adequate early warning. Recommended 

minimum protection is one alarm device in every sleeping area, every 

bedroom, and on every level of your home. Some experts recommend 

battery powered Smoke and CO Alarms be used in conjunction with 

interconnected AC powered Smoke Alarms. For details, see “About 

Smoke Alarms” for details.

Smoke/CO Alarms may not be heard.

 The alarm horn loudness 

meets or exceeds current UL standards of 85 dB at 10 feet (3 meters). 

However, if the Smoke/CO Alarm is installed outside the bedroom, it 

may not wake up a sound sleeper or one who has recently used drugs 

or has been drinking alcoholic beverages. This is especially true if the 

door is closed or only partly open. Even persons who are awake may 

not hear the alarm horn if the sound is blocked by distance or closed 

doors. Noise from traffic, stereo, radio, television, air conditioner, or 

other appliances may also prevent alert persons from hearing the alarm 

horn. This Smoke/CO Alarm is not intended for people who are hearing 

impaired.

The Alarm may not have time to alarm before the fire itself causes 

damage, injury, or death, since smoke from some fires may not 

reach the unit immediately. Examples of this include persons 

smoking in bed, children playing with matches, or fires caused by 

violent explosions resulting from escaping gas.
This Smoke/CO Alarm is not a substitute for life insurance.

  

Though this Smoke/CO Alarm warns against increasing CO levels or 

the presence of smoke, BRK Brands, Inc. does not warrant or imply in 

any way that they will protect lives. Homeowners and renters must still 

insure their lives.

This Smoke/CO Alarm has a limited life.

 Although this Smoke/CO 

Alarm and all of its parts have passed many stringent tests and are 

designed to be as reliable as possible, any of these parts could fail at 

any time. Therefore, you must test this device weekly. The unit should 

be replaced immediately if it is not operating properly.

This Smoke/CO Alarm is not foolproof.

 Like all other electronic 

devices, this Smoke/CO Alarm has limitations. It can only detect smoke 

or CO that reaches the sensors. It may not give early warning of the 

source of smoke or CO is in a remote part of the home, away from the 

alarm device.

GENERAL LIMITATIONS OF  

SMOKE/CO ALARMS

Printed in Mexico   M08-0469-011   

K1

   09/14

First Alert

®

 is a registered trademark of the First Alert Trust.

For your records, please record:

Date Purchased: __________________

Where Purchased: __________________________

Date Installed: ____________/____________Month/Year

Replace alarm 10 years after installation. Please write the date in 

the space provided: 

                _____________/____________Month/Year

The alarm will also provide an audible End-of-Life Signal  

approximately 10 years after installation to remind you to replace 

the unit.
The End-of-Life Signal can be silenced for up to 2 days.  

Do not unplug the alarm or remove the batteries until you get 

replacement.

More specifically, install Smoke 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 

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

•  At the top of the first-to-second floor stairway, and at the bottom of 

the basement stairway.

 

Specific requirements for Smoke Alarm installation vary from state to 

state and from region to region. Check with your local Fire Department 

for current requirements in your area. 

It is recommended AC or AC/

DC units be interconnected for added protection.

HOW CAN I PROTECT MY FAMILY FROM  

CO POISONING?

A CO Alarm is an excellent means of protection. It monitors the air  

and sounds a loud alarm before Carbon Monoxide levels become 

threatening for average, healthy adults.

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

appliances. 

To help prevent CO problems and reduce the risk of CO poisoning:
 

•    Clean chimneys and flues yearly. Keep them free of debris, 

leaves, and nests for proper air flow. Also, have a professional 

check for rust and corrosion, cracks, or separations. These  

conditions can prevent proper air movement and cause 

backdrafting. Never “cap” or cover a chimney in any way that 

would block air flow.

 

•    Test and maintain all fuel-burning equipment annually. Many 

local gas or oil companies and HVAC companies offer appliance 

inspections for a nominal fee.

 

•    Make regular visual inspections of all fuel-burning appliances. 

Check appliances for excessive rust and scaling. Also check the 

flame on the burner and pilot lights. The flame should be blue.  

A yellow flame means fuel is not being burned completely 

and CO may be present. Keep the blower door on the furnace 

closed. Use vents or fans when they are available on all fuel-

burning appliances. Make sure appliances are vented to the  

outside. Do not grill or barbecue indoors, or in garages or on 

screen porches.

 

•    Check for exhaust backflow from CO sources. Check the draft 

hood on an operating furnace for a backdraft. Look for cracks 

on furnace heat exchangers.

 

•    Check the house or garage on the other side of shared wall.

 

•    Keep windows and doors open slightly. If you suspect that CO  

is escaping into your home, open a window or a door. Opening 

windows and doors can significantly decrease CO levels.

In addition, familiarize yourself with all enclosed materials. Read 

this manual in its entirety, and make sure you understand what to 

do if your CO Alarm sounds.

REGULATORY INFORMATION FOR  

SMOKE/CO ALARMS

REGULATORY INFORMATION FOR CO ALARMS

WHAT LEVELS OF CO CAUSE AN ALARM?

Underwriters Laboratories Inc. Standard UL2034 requires residential 

CO Alarms to sound when exposed to levels of CO and exposure times 

as described below. They are measured in parts per million (ppm) of 

CO over time (in minutes).

UL2034 Required Alarm Points*:

 

•    If the alarm is exposed to 400 ppm of CO, IT MUST ALARM 

BETWEEN 4 and 15 MINUTES.

 

•    If the alarm is exposed to 150 ppm of CO, IT MUST ALARM 

BETWEEN 10 and 50 MINUTES.

 

•    If the alarm is exposed to 70 ppm if CO, IT MUST ALARM 

BETWEEN 60 and 240 MINUTES.

*

 Approximately 10% COHb exposure at levels of 10% to 95% Relative 

Humidity (RH).
The unit is designed not to alarm when exposed to a constant level  

of 30 ppm for 30 days.

 

CO Alarms are designed to alarm before there is an immediate life 

threat. Since you cannot see or smell CO, never assume it’s not present.
•  An exposure to 100 ppm of CO for 20 minutes may not affect  

average, healthy adults, but after 4 hours the same level may cause 

headaches.

•  An exposure to 400 ppm of CO may cause headaches in average, 

healthy adults after 35 minutes, but can cause death after 2 hours.

Standards:

 Underwriters Laboratories Inc. Single and Multiple Station 

carbon monoxide alarms UL2034.
According to Underwriters Laboratories Inc. UL2034, Section 1-1.2: 

“Carbon monoxide alarms covered by these requirements are intended 

to respond to the presence of carbon monoxide from sources such as, 

but not limited to, exhaust from internal-combustion engines, abnormal 

operation of fuel-fired appliances, and fireplaces. CO Alarms are 

intended to alarm at carbon monoxide levels below those that could 

cause a loss of ability to react to the dangers of Carbon Monoxide 

exposure.” This CO Alarm monitors the air at the Alarm, and is 

designed to alarm before CO levels become life threatening. This  

allows you precious time to leave the house and correct the problem. 

This is only possible if Alarms are located, installed, and maintained  

as described in this manual.

Gas Detection at Typical Temperature and Humidity Ranges:

 The 

CO Alarm is not formulated to detect CO levels below 30 ppm typically. 

UL tested for false alarm resistance to Methane (500 ppm), Butane (300 

ppm), Heptane (500 ppm), Ethyl Acetate (200 ppm), Isopropyl Alcohol 

(200 ppm) and Carbon Dioxide (5000 ppm). Values measure gas and 

vapor concentrations in parts per million.

Audible Alarm:

 85 dB minimum at 10 feet (3 meters).

REGULATORY INFORMATION FOR SMOKE ALARMS
RECOMMENDED LOCATIONS FOR SMOKE ALARMS

Installing Smoke Alarms in Single-Family Residences

The National Fire Protection Association (NFPA), recommends one 

Smoke Alarm on every floor, in every sleeping area, and in every  

bedroom. In new construction, the Smoke Alarms must be AC powered 

and interconnected. See “Agency Placement Recommendations” for 

details. For additional coverage, it is recommended that you install a 

Smoke Alarm in all rooms, halls, storage areas, finished attics, and 

basements, where temperatures normally remain between 40˚ F (4.4˚ 

C) and 100˚ F (37.8˚ C). Make sure no door or other obstruction could 

keep smoke from reaching the Smoke Alarms.

Continued...

POTENTIAL SOURCES OF CO IN THE HOME

Fuel-burning appliances like:

 portable 

heater, gas or wood burning fireplace, 

gas kitchen range or cooktop, gas 

clothes dryer.

Damaged or insufficient venting:

  

corroded or disconnected water heater 

vent pipe, leaking chimney pipe or flue, 

or cracked heat exchanger, blocked or 

clogged chimney opening.

Improper use of appliance/device:

  

operating a barbecue grill or vehicle  

in an enclosed area (like a garage or  

screened porch).

Transient CO Problems:

 “transient” or on-again-off-again CO problems 

can be caused by outdoor conditions and other special circumstances.

The following conditions can result in transient CO situations:

1.  Excessive spillage or reverse venting of fuel appliances caused by 

outdoor conditions such as:

 

•    Wind direction and/or velocity, including high, gusty winds. 

Heavy air in the vent pipes (cold/humid air with extended  

periods between cycles).

 

•    Negative pressure differential resulting from the use of exhaust 

fans.

 

•    Several appliances running at the same time competing for  

limited fresh air.

 

•    Vent pipe connections vibrating loose from clothes dryers,  

furnaces, or water heaters.

 

•    Obstructions in or unconventional vent pipe designs which can 

amplify the above situations.

2.  Extended operation of unvented fuel burning devices (range, oven, 

fireplace).

3.  Temperature inversions, which can trap exhaust close to the 

ground.

4.  Car idling in an open or closed attached garage, or near a home.
These conditions are dangerous because they can trap exhaust in your 

home. Since these conditions can come and go, they are also hard to 

recreate during a CO investigation.

RECOMMENDED LOCATIONS FOR SMOKE ALARMS, Continued

SPECIAL COMPLIANCE CONSIDERATIONS, Continued

FCC Compliance

This equipment has been tested and found to comply with the limits for 

a Class B digital device, pursuant to Part 15 of the FCC rules. These 

limits are designed to provide reasonable protection against harmful 

interference in a residential installation. This equipment generates, uses 

and can radiate radio frequency energy and, if not installed and used 

in accordance with the instructions, may cause harmful interference to 

radio communications.
However, there is no guarantee that the interference will not occur in a 

particular installation. If this equipment does cause harmful interference 

to radio or television reception, which can be determined by turning  

the equipment off and on, the user is encouraged to try to correct the 

interference by one or more of the following measures:
•  Reorient or relocate the receiving antenna.
•  Increase the separation between the equipment and receiver.
•  Connect the equipment into an outlet on a circuit different from that 

of the receiver.

•  Consult the dealer or an experienced radio or TV technician for 

help.

Warning:

 Changes or modifications to the product, not expressly 

approved by First Alert / BRK Brands, Inc., could void the user’s 

authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is  

subject to the following two conditions: (1) this device may not cause 

harmful interference, and (2) this device must accept any interference 

received, including interference that may cause undesired operation.

SPECIAL COMPLIANCE CONSIDERATIONS

This Smoke Alarm is suitable for use in apartments, condominiums,  

townhouses, hospitals, day care facilities, health care facilities, boarding 

houses, group homes and dormitories provided a primary fire detection 

system already exists to meet fire detection requirements in common 

areas like lobbies, hallways, or porches. Using this Smoke Alarm in 

common areas may not provide sufficient warning to all residents or 

meet local fire protection ordinances/regulations.
This Smoke Alarm alone is not a suitable substitute for complete fire 

detection systems in places housing many people—like apartment 

buildings, condominiums, hotels, motels, dormitories, hospitals, health 

care facilities, nursing homes, day care facilities, or group homes of any 

kind. It is not a suitable substitute for complete fire detection systems 

in warehouses, industrial facilities, commercial buildings, and special-

purpose non-residential buildings which require special fire detection 

and alarm systems. Depending on the building codes in your area, this 

Smoke Alarm may be used to provide additional protection in these 

facilities.
In new construction, most building codes require the use of AC or AC/

DC powered Smoke Alarms only. In existing construction, AC, AC/

DC, or DC powered Smoke Alarms can be used as specified by local 

building codes. Refer to NFPA 72 (National Fire Alarm and Signaling 

Code) and NFPA 101 (Life Safety Code), local building codes, or 

consult your Fire Department for detailed fire protection requirements in 

buildings not defined as “households”.

HUD MAP Program

Certain HUD battery powered Smoke Alarm applications, especially 

those that fall under HUD 223(f) MAP (Multi-family Accelerated 

Processing), may require a 10 Year sealed tamper resistant battery. This 

alarm does not meet that requirement. Substitute First Alert SA340B.

TROUBLESHOOTING GUIDE

If the Alarm...

Problem...

You should...

Horn “chirps” about once per minute;  

Voice:

 “Replace battery in [Location]” every 5 

hours

Low battery warning.

Install two new AA batteries

*

.

Horn sounds three “chirps” every minute;  

Voice:

 “Detector error in [Location, example 

“Hallway”], please see manual” repeated every  

5 hours; LED has 3 Green flashes with “chirps”.

MALFUNCTION SIGNAL.

 

Device is not  

working properly, and needs to be replaced.

Units under warranty should be returned to  

manufacturer for replacement. See “Limited 

Warranty” for details.

Carbon Monoxide Alarm ONLY:

CO Alarm goes back into alarm 4 minutes after 

you Silence it.

CO levels indicate a potentially dangerous  

situation.

IF YOU ARE FEELING SYMPTOMS OF CO  

POISONING, EVACUATE your home and call 

911 or the Fire Department. Refer to “If The  

CO Alarm Sounds” for details.

CO Alarm sounds frequently even though no high  

levels of CO are revealed in an investigation.

The CO Alarm may be improperly located. Refer 

to “Where to Install This Alarm” for details.

Relocate your Alarm. If frequent alarms  

continue, have home rechecked for potential 

CO problems. You may be experiencing an 

intermittent CO problem.

Smoke Alarm ONLY:

Smoke Alarm sounds when no smoke is visible.

Unwanted alarm may be caused by  

non-emergency source like cooking smoke.

Silence Alarm using manual button; clean the 

Alarm’s cover with a soft, clean cloth.  

If frequent unwanted alarms continue, relocate 

your Alarm. Alarm may be too close to a kitch-

en, cooking appliance, or steamy  

bathroom.

*

For a list of acceptable replacement batteries, see “Regular Maintenance.”

If you have questions that cannot be answered by reading this manual, call Consumer Affairs at 1-800-323-9005, M-F 7:30 a.m. to 5:00 p.m. (CST)

The light flashes GREEN and the horn sounds  

5 “chirps” every minute;  

Voice:

 “Detector error in [Location, example 

“Basement”], please see manual.” Repeated 

every 5 hours.

END OF LIFE SIGNAL.

 

Alarm needs to be 

replaced.

Immediately replace the Alarm.

LIMITED WARRANTY

BRK Brands, Inc., (“BRK”) the maker of First Alert

®

 brand products warrants that for a period of ten years from the date of purchase, this product will 

be free from defects in material and workmanship. BRK, at its option, will repair or replace this product or any component of the product found to be 

defective during the warranty period. Replacement will be made with a new or remanufactured product or component. If the product is no longer available, 

replacement may be made with a similar product of equal or greater value. This is your exclusive warranty.
This warranty is valid for the original retail purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof 

of purchase is required to obtain warranty performance. BRK dealers, service centers, or retail stores selling BRK products do not have the right to alter, 

modify or any way change the terms and conditions of this warranty.
This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper 

voltage or current, use contrary to the operating instructions, disassembly, repair or alteration by anyone other than BRK or an authorized service center. 

Further, the warranty does not cover Acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included with this unit.
BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent  

prohibited by applicable law, any implied warranty of merchantability or fitness for a particular purpose is limited in duration to the duration of the above 

warranty. Some states, provinces or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or limitations on how 

long an implied warranty lasts, so the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may 

also have other rights that vary from state to state or province to province.

How to Obtain Warranty Service
Service: 

If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at  

1-800-323-9005, 7:30 AM - 5:00 PM Central Standard Time, Monday through Friday. To assist us in serving you, please have the model number and 

date of purchase available when calling. 

For Warranty Service return to:

 25 Spur Drive, El Paso, TX 79906

Battery:

 BRK Brands, Inc. make no warranty, express or implied, written or oral, including that of merchantability or fitness for any particular purpose 

with respect to battery.

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