BRK electronic Smoke Alarm 9120LB User Manual

IF THIS SMOKE ALARM SOUNDS, Continued  
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.  
In air streams near kitchens. Air currents can draw cooking smoke into the sensing  
chamber of a Smoke Alarm near the kitchen.  
In very damp, humid or steamy areas, or directly near bathrooms with showers.  
Keep units at least 10 feet (3 meters) away from showers, saunas, dishwashers, etc.  
Where the temperatures are regularly below 40˚F (4˚ C) or above 100˚ F (38˚ C) including  
unheated buildings, outdoor rooms, porches, or unfinished attics or basements.  
In very dusty, dirty, or greasy areas. Do not install a Smoke Alarm directly over the  
stove or range. Clean a laundry room unit frequently to keep it free of dust or lint.  
Near fresh air vents, ceiling fans, or in very drafty areas. Drafts can blow smoke away  
from the unit, preventing it from reaching sensing chamber.  
In insect infested areas. Insects can clog openings to the sensing chamber and cause  
unwanted alarms.  
Less than 12 inches (305 mm) away from fluorescent lights. Electrical “noise” can  
interfere with the sensor.  
UNDERSTANDING THE INDICATOR LIGHTS AND  
ALARM HORN PATTERNS  
HOW TO INSTALL THIS SMOKE ALARM  
This Smoke Alarm is designed to be mounted on any standard wiring junction box to a 4-inch (10 cm) size, on either the ceiling or wall. Read “Recommended Locations For Smoke Alarms” and  
“Locations to Avoid For Smoke Alarms” before you begin installation. Tools you will need: • Needle-nose pliers or utility knife Standard Flathead screwdriver.  
WHAT TO DO IN CASE OF FIRE  
USER’S MANUAL  
Don’t panic; stay calm. Follow your family escape plan.  
Condition  
LED (Red or Green  
Lights)  
Horn  
Get out of the house as quickly as possible. Don’t stop to get dressed or collect  
anything.  
Smoke Alarms  
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.  
Normal Operation  
(AC Power)  
Green LED ON; flashing  
Red LED once/ minute  
No Audible Alarm  
No Audible Alarm  
Make sure the Alarm is not receiving excessively noisy power. Examples of noisy power could be major appliances on the same circuit, power from a generator or solar power, light  
dimmer on the same circuit or mounted near fluorescent lighting. Excessively noisy power may cause damage to your Alarm.  
Normal Operation  
(DC Power – 9120B only)  
Green LED OFF; Red LED  
flashes once/minute  
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.  
AC Powered Ionization Smoke  
Alarm with Silence and  
Latching Features  
Model 9120  
Input: 120V AC ~, 60 Hz, 0.04A  
THE PARTS OF THIS SMOKE ALARM  
DURING TESTING  
Red LED flashes  
once every second  
Horn pattern:  
3 beeps, pause, 3 beeps,  
pause  
Call the Fire Department as soon as possible from outside. Give your address, then  
your name.  
The Mounting Bracket:  
1
Never go back inside a burning building for any reason.  
Contact your Fire Department for ideas on making your home safer.  
To remove the mounting bracket from the Smoke Alarm base,  
hold the Smoke Alarm base firmly and twist the mounting  
bracket counterclockwise. The mounting bracket installs onto  
the junction box. It has a variety of screw slots to fit most boxes.  
3
The Parts of This Unit  
LOW OR MISSING  
BATTERY (9120B only)  
Red LED flashes  
once/minute  
Horn “chirps”  
once/minute  
In “dead air” spaces. “Dead air” spaces may prevent smoke from reaching the Smoke Alarm.  
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2
3
4
5
6
7
8
9
Mounting Bracket  
Alarms have various limitations. See "Limitations of Smoke Alarms" for details.  
AVOIDING DEAD AIR SPACES  
“Dead air” spaces may prevent smoke from reaching the Smoke Alarm. To avoid dead air  
spaces, follow the installation recommendations below.  
On ceilings, install Smoke Alarms as close to the center of the ceiling as possible. If this is  
not possible, install the Smoke 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 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 the first Smoke Alarm within 3 feet (0.9  
meters) of the peak of the ceiling, measured horizontally. Additional Smoke 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.  
Mounting Slots  
ALARM CONDITION  
Smoke Initiating Device  
Red LED flashes  
rapidly on the unit  
that triggered the  
Alarm.  
Horn pattern:  
2
AC Powered Ionization Smoke  
Alarm with Battery Back-up,  
Silence and Latching Features  
Model 9120B  
Input: 120V AC ~, 60 Hz, 0.04A  
USING THE SILENCE FEATURE  
The Silence Feature on this unit can temporarily quiet an unwanted alarm for up to 10 minutes.  
3 beeps, pause, 3 beeps,  
pause repeating on all  
Alarms  
Locking Pins (break out of bracket)  
Hot (Black) AC Wire  
The Power Connector:  
The power connector plugs into a power input block on the  
Smoke Alarm. It supplies the unit with AC power.  
2
The Silence Feature does not disable the unit—it makes it temporarily less sensitive  
to smoke. For your safety, if smoke around the unit is dense enough to suggest a  
potentially dangerous situation, the unit will stay in alarm or may re-alarm quickly.  
If you do not know the source of the smoke, do not assume it is an unwanted alarm.  
Not responding to an alarm can result in property loss, injury, or death. If the unit will  
not silence and no heavy smoke is present, or if it stays in silence mode continuously,  
it should be replaced immediately.  
ALARM CONDITION  
Interconnect Alarm  
Red LED on the  
other Alarms in an  
interconnected series  
will be OFF.  
Horn pattern:  
Neutral (White) AC Wire  
• The black wire is “hot.”  
3 beeps, pause, 3 beeps,  
pause repeating on all  
Alarms  
3
8
6
• The white wire is neutral.  
Interconnect (Orange) Wire  
Latch to Open Battery Compartment  
Swing-Out Battery Compartment  
Quick-Connect Power Connector  
4
7
5
• The orange wire is used for interconnect.  
IN SILENCE MODE  
Red LED flashes  
once every 10  
seconds  
Horn remains silent for up  
to 10 minutes. Horn will  
sound if smoke levels  
increase.  
If you need to remove the power connector, insert a flat screwdriver  
blade between the power connector and the security tab inside the  
power input block. Gently pry back the tab and pull the connector free.  
LISTED TO  
UL 217  
Models 9120  
9120B  
ABOUT SMOKE ALARMS  
Printed in Mexico  
M08-0134-004 K1 08/08  
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. However, they do not provide interconnected functionality.  
To silence Smoke Alarms in an interconnected series:  
1. To silence multiple alarms in an interconnected series, you must press the Test/Silence  
button on the unit(s) that initiated the alarm.  
STANDARD  
“LATCHING” ALARM  
INDICATOR  
Green LED ON for  
2 seconds/OFF for  
2 seconds,  
Horn remains silent  
9
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.  
NOTE: The red LED on the initiating alarm will flash rapidly. The red LED will be Off on  
all other non-initiating alarms. No audible sound will be heard. The unit will exit “silence  
mode” in approximately 10 minutes.  
repeatedly until  
IMPORTANT! PLEASE READ CAREFULLY AND SAVE  
reset, on initiating unit(s).  
This user’s manual contains important information about your Smoke Alarm’s operation.  
If you are installing the Smoke Alarm for use by others, you must leave this manual —  
or a copy of it — with the end user.  
2. While the unit is in “silence mode”, pressing and holding the Test/Silence button for  
approximately 10 seconds will test the unit. After testing, the unit will re-enter “silence  
mode” and the 10-minute timer is reset.  
Wireless Interconnected Alarms: Offer the same interconnected functionality as with  
hardwired alarms, without wires. Units are easy to install and do not require professional  
installation. They provide protection even when electricity fails, provided the batteries are  
fresh and correctly installed.  
Smoke Alarms for Solar or Wind Energy users and battery backup power systems:  
AC powered Smoke Alarms should only be operated with true or pure sine wave inverters.  
Operating this Smoke 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. These units can be inter-  
connected so if one unit senses smoke, all units alarm.  
FOLLOW THESE INSTALLATION STEPS  
WEEKLY TESTING  
“LATCHING ALARM” INDICATOR  
The basic installation of this Smoke Alarm is similar whether you want to install one  
Smoke Alarm, or interconnect more than one Smoke Alarm. If you are interconnecting  
more than one Smoke Alarm, you MUST read “Special Requirements For Interconnected  
Smoke Alarms” below before you begin installation.  
9. For new construction, place supplied dust cover over Alarm to prevent damage from  
dust and construction debris. When construction is complete, remove cover.  
INTRODUCTION  
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).  
Thank you for choosing BRK Brands, Inc. for your Smoke Alarm needs. You have purchased  
a state-of-the-art Smoke Alarm designed to provide you with early warning of a fire.  
Key features include:  
Smoke will not be able to reach smoke sensor while cover is in place. Cover must  
be removed!  
Smart Technology designed to help reduce unwanted or nuisance alarms.  
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.  
ELECTRICAL SHOCK HAZARD. Turn off power to the area where you will install this  
unit at the circuit breaker or fuse box before beginning installation. Failure to turn off  
the power before installation may result in serious electrical shock, injury or death.  
KEY:  
BEDROOM  
BEDROOM  
KITCHEN  
BEDROOM  
GARAGE  
Single Button Test/Silence eliminates confusion. Depending on what mode the alarm is  
in, pushing the button provides different functions such as testing the alarm, silencing the  
alarm, re-testing the alarm when in silence and clearing the Latching feature.  
SPECIAL REQUIREMENTS FOR INTERCONNECTED SMOKE ALARMS  
LATCHING ALARM:  
Unit was exposed  
to alarm levels of Smoke  
Smoke alarms are not to be used with detector guards unless the combination has  
been evaluated and found suitable for that purpose.  
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 Alarm. Press and hold the  
test button on the cover of the unit until the alarm sounds (the unit may continue to alarm  
for a few seconds after you release the button). If it does not alarm, make sure the unit is  
receiving power and test it again. If it still does not alarm, replace it immediately. During  
testing, you will hear a loud, repeating horn pattern: 3 beeps, pause, 3 beeps, pause.  
1. Using wire nuts, connect the power connector to the household wiring.  
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 unit to install, refer to NFPA (National Fire Protection Association) 72 (National  
Fire Alarm 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.  
Failure to meet any of the above requirements could damage the units and  
cause them to malfunction, removing your protection.  
Latching Alarm Indicator easily identifies initiating alarm even after the alarm condition has  
subsided.  
HALL  
LIVING ROOM  
LATCHING NOT ACTIVATED:  
Unit was not exposed  
to alarm levels of Smoke  
AC and AC/DC Smoke Alarms can be interconnected. Under AC power, all  
units will alarm when one senses smoke. When power is interrupted, only  
the AC/DC units in the series will continue to send and receive signals.  
AC powered Smoke Alarms will not operate.  
BASEMENT  
Perfect Mount System includes a gasketless base for easy installation and a new mounting  
bracket that keeps the alarm secure over a wide rotation range to allow for perfect  
alignment.  
Improper wiring of the power connector or the wiring leading to the power connec-  
tor will cause damage to the Alarm and may lead to a non-functioning Alarm.  
When testing a series of interconnected units you must test each unit individually.  
Make sure all units alarm when each one is tested.  
The Latching Alarm Indicator is automatically activated after an Alarm is exposed to alarm  
levels of smoke. After smoke levels drop below alarm levels, the green LED will be On for 2  
seconds/Off for 2 seconds, repeatedly. This feature helps emergency responders, investiga-  
tors, or service technicians identify which unit(s) in your home were exposed to alarm levels  
of smoke after the condition has subsided. The Latching Alarm Indicator stays ON until you  
reset it by pressing the Test/Silence button. The Latching Alarm Indicator is also reset when  
AC and DC power is removed from the Alarm.  
Dust Cover is included to keep the alarm clean during construction.  
STAND-ALONE ALARM ONLY:  
Interconnected units can provide earlier warning of fire than stand-alone units, especially  
if a fire starts in a remote area of the dwelling. If any unit in the series senses smoke, all  
units will alarm. To determine which Smoke Alarm initiated an alarm, see table:  
SPECIAL COMPLIANCE CONSIDERATIONS  
Easy Installation/Maintenance features include a large opening in the mounting bracket for  
easy access to wiring. A battery pull tab keeps the battery fresh until the home is occupied.  
A Side Load Battery Drawer allows for easy battery replacement without removing the alarm  
from the ceiling or wall (Model 9120B only).  
Connect the white wire on the power connector to the neutral wire in the junction  
box.  
REGULAR MAINTENANCE  
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, long-term health care facilities, nursing homes, day care facilities, or  
group homes of any kind—even if they were once single-family homes. 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.  
Connect the black wire on the power connector to the hot wire in the junction box.  
Tuck the orange wire inside the junction box. It is used for interconnect only.  
During an Alarm:  
Use only the replacement batteries listed below. The unit may not operate properly  
with other batteries. Never use rechargeable batteries since they may not provide a  
constant charge.  
Improved UV Resistance keeps the alarm from discoloring over time.  
On Initiating Alarm(s)  
On All Other Alarms  
Red LED(s) flashes (flash) rapidly  
Red LED is Off  
INTERCONNECTED UNITS ONLY:  
© 2008 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc.  
3901 Liberty Street Road, Aurora, IL 60504-8122  
Consumer Affairs: (800) 323-9005  
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.  
IF YOU SUSPECT A PROBLEM  
Strip off about 1/2” (12 mm) of the plastic coating on the orange wire on the  
power connector.  
Smoke Alarms may not operate properly because of dead, missing or weak batteries, a  
build-up of dirt, dust or grease on the Smoke Alarm cover, or installation in an improper  
location. Clean the Smoke Alarm as described in “Regular Maintenance,” and install a fresh  
battery, then test the Smoke Alarm again. If it fails to test properly when you use the  
Test/Silence button, or if the problem persists, replace the Smoke Alarm immediately.  
After an Alarm (Latching):  
On Initiating Alarm(s)  
Test it at least once a week.  
The following information applies to all four types of buildings listed below:  
Connect the white wire on the power connector to the neutral wire in the junction  
box.  
Green LED(s) On for 2 seconds/Off for 2 seconds  
Green LED(s) On, Red LED(s) is Off  
Clean the Smoke Alarm at least once a month; gently vacuum the outside of the  
Smoke Alarm using your household vacuum’s soft brush attachment. Test the Smoke  
Alarm. Never use water, cleaners or solvents since they may damage the unit.  
In new construction, most building codes require the use of AC or AC/DC powered Smoke  
Alarms only. AC, AC/DC, or DC powered Smoke Alarms can be used in existing construction  
as specified by local building codes. Refer to NFPA 72 (National Fire Alarm 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.”  
All First Alert® and BRK® Smoke Alarms conform to regulatory requirements,  
including UL217 and are designed to detect particles of combustion. Smoke particles  
of varying number and size are produced in all fires.  
On All Other Alarms  
Connect the black wire on the power connector to the hot wire in the junction box.  
If you hear a “chirp” once a minute, replace the battery.  
If you experience frequent non-emergency alarms (like those caused by cooking  
smoke), try relocating the Smoke Alarm.  
Connect the orange wire on the power connector to the interconnect wire in the  
junction box. Repeat for each unit you are interconnecting. Never connect the hot or  
neutral wires in the junction box to the orange interconnect wire. Never cross hot  
and neutral wires between Alarms.  
If the Smoke Alarm becomes contaminated by excessive dirt, dust and/or grime, and  
cannot be cleaned to avoid unwanted alarms, replace the unit immediately.  
Compatible Interconnected Units  
Ionization technology is generally more sensitive than photoelectric 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.  
1. Single-Family Residence: Single family home, townhouse. It is recommended Smoke Alarms  
be installed on every level of the home, in every bedroom, and in each bedroom hallway.  
If the alarm sounds when no smoke is visible, try cleaning or relocating the  
Smoke Alarm. The cover may be dirty.  
If the alarm does not sound during testing, make sure it is receiving AC power  
from the household current.  
Relocate the unit if it sounds frequent unwanted alarms. See “Locations To Avoid For  
Smoke Alarms” for details.  
Interconnect units within a single family residence only. Otherwise all households will  
experience unwanted alarms when you test any unit in the series. Interconnected units  
will only work if they are wired to compatible units and all requirements are met. This unit  
is designed to be compatible with:  
2. Multi-Family or Mixed Occupant Residence: Apartment building, condominium. This  
Smoke Alarm is suitable for use in individual apartments or condos, 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.  
3. Institutions: Hospitals, day care facilities, long-term health care facilities. This Smoke  
Alarm is suitable for use in individual patient sleeping/resident rooms, 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.  
4. Hotels and Motels: Also boarding houses and dormitories. This Smoke Alarm is suitable  
for use inside individual sleeping/resident rooms, 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.  
2. Remove the mounting bracket from the base, and attach it to the junction box.  
3. Plug the power connector into the back of the Smoke Alarm.  
When the battery back-up becomes weak, the Smoke Alarm will “chirp” about once  
a minute (the low battery warning). This warning should last 7 days, but you should  
replace the battery immediately to continue your protection.  
Photoelectric technology is generally more sensitive than ionization technology at  
detecting large particles, which tend to be produced in greater amounts by smol-  
dering fires, which may smolder for hours before bursting into flame. Sources of  
these fires may include cigarettes burning in couches or bedding.  
First Alert® Smoke Alarm Models SA4120, SA4121B, SA100B and BRK Electronics®  
Smoke Alarm Models 9120, 9120B, SC6120B, SC9120B, 7010, 7010B, 100S, 4120,  
4120B, 4120SB, RM3 (Relay Module); BRK Electronics® CO Alarm Models CO5120BN,  
CO5120PDBN; BRK Electronics® Heat Alarm Models HD6135F and HD6135FB.  
4. Position the base of the Smoke Alarm over the mounting bracket and turn. The  
Alarm will remain secure over a wide rotation range to allow for perfect alignment.  
When wall mounting, this will allow fine-tuning on the positioning to compensate  
for misaligned wall studs and to keep the wording level. The Alarm can be positioned  
over the bracket every 120°. Rotate the Alarm until aligned properly.  
Always discharge the branch circuit before servicing an AC or AC/DC Smoke Alarm.  
First, turn off the AC power at the circuit breaker or fuse box. Next, remove the battery  
from Smoke Alarms with battery back-up. Finally, press and hold the test button for 5-10  
seconds to discharge the branch circuit.  
Choosing a replacement battery:  
Your Smoke Alarm requires one standard 9V battery. The following batteries are acceptable  
as replacements: Duracell #MN1604, (Ultra) #MX1604; Eveready (Energizer) #522, Eveready  
(Energizer) #1222. You may also use a Lithium battery like the Ultralife U9VL-J for longer  
service life between battery changes. These batteries are available at many local retail  
stores.  
For maximum protection, use both types of Smoke Alarms on each level and in every  
bedroom of your home.  
Interconnected units must meet ALL of the following requirements:  
Do not try fixing the alarm yourself – this will void your warranty!  
5. Check all connections.  
• A maximum of 18 compatible units may be interconnected  
(Maximum of 12 Smoke Alarms).  
If the Smoke Alarm is still not operating properly, and it is still under warranty, please see  
“How to Obtain Warranty Service” in the Limited Warranty.  
FIRE SAFETY TIPS  
STAND-ALONE ALARM ONLY:  
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.  
• The same fuse or circuit breaker must power all interconnected units.  
If you are only installing one Smoke Alarm, restore power to the junction box.  
Actual battery service life depends on the Smoke 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”).  
• The total length of wire interconnecting the units should be less than 1000 feet  
(300 meters). This type of wire is commonly available at Hardware and Electrical  
Supply stores.  
RECOMMENDED LOCATIONS FOR SMOKE ALARMS  
Installing Smoke Alarms in Single-Family Residences  
INTERCONNECTED UNITS ONLY:  
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˚ C) and 100˚ F (38˚ C). Make sure no door or other obstruction  
could keep smoke from reaching the Smoke Alarms.  
If you are interconnecting multiple Smoke Alarms, repeat steps 1-5 for each  
Smoke Alarm in the series. When you are finished, restore power to the  
junction box.  
LIMITATIONS OF SMOKE ALARMS  
• All wiring must conform to all local electrical codes and NFPA 70 (NEC). Refer to  
NFPA 72, NFPA 101, and/or your local building code for further connection  
requirements.  
Smoke Alarms have played a key role in reducing deaths resulting from home fires world-  
wide. However, like any warning device, Smoke Alarms can only work if they are properly  
located, installed, and maintained, and if smoke reaches the Alarms. They are not foolproof.  
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.  
IF THIS SMOKE ALARM SOUNDS  
RESPONDING TO AN ALARM  
During an alarm, you will hear a loud, repeating horn pattern: 3 beeps, pause,  
3 beeps, pause.  
Smoke 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 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 alarm while sleeping and to determine whether they  
may need assistance in the event of an emergency.  
Smoke 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.  
Smoke Alarms cannot detect fires if the smoke does not reach the Alarms. Smoke from  
fires in chimneys or walls, on roofs, or on the other side of closed doors may not reach the  
sensing chamber and set off the Alarm. That is why one unit should be installed inside each  
bedroom or sleeping area—especially if bedroom or sleeping area doors are closed at night—  
and in the hallway between them.  
Smoke Alarms may not detect fire on another floor or area of the dwelling. For example,  
a stand-alone unit on the second floor may not detect smoke from a basement fire until the  
fire spreads. This may not give you enough time to escape safely. That is why recommended  
minimum protection is at least one unit in every sleeping area, and every bedroom on every  
level of your dwelling. Even with a unit on every floor, stand-alone units may not provide as  
much protection as interconnected units, especially if the fire starts in a remote area. Some  
safety experts recommend installing interconnected AC powered units with battery back-up  
(see “About Smoke Alarms”) or professional fire detection systems, so if one unit senses  
smoke, all units alarm. Interconnected units may provide earlier warning than stand-alone  
units since all units alarm when one detects smoke.  
Smoke Alarms may not be heard. Though the alarm horn in this unit meets or exceeds  
current standards, it may not be heard if: 1) the unit is located outside a closed or partially  
closed door, 2) residents recently consumed alcohol or drugs, 3) the Alarm is drowned out  
by noise from stereo, TV, traffic, air conditioner or other appliances, 4) residents are hearing  
impaired or sound sleepers. Special purpose units, like those with visual and audible alarms,  
should be installed for hearing impaired residents.  
Smoke Alarms 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.  
Smoke Alarms are not foolproof. Like any electronic device, Smoke Alarms are made of  
components that can wear out or fail at any time. You must test the unit weekly to ensure  
your continued protection. Smoke Alarms cannot prevent or extinguish fires. They are not a  
substitute for property or life insurance.  
Smoke Alarms have a limited life. The unit should be replaced immediately if it is not  
operating properly. You should always replace a Smoke Alarm after 10 years from date of  
purchase. Write the purchase date on the space provided on back of unit.  
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ELECTRICAL SHOCK HAZARD. Do not restore power until all Smoke Alarms are  
completely installed. Restoring power before installation is complete may result in  
serious electrical shock, injury or death.  
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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.  
BEFORE YOU INSTALL THIS SMOKE ALARM  
6. Make sure the Smoke Alarm is receiving AC power. Under normal operation, the  
Green power indicator light will shine continuously.  
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• 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.  
Important! Read “Recommended Locations for Smoke Alarms” and “Locations to Avoid  
for Smoke Alarms” before beginning. This unit monitors the air, and when smoke reaches  
its sensing chamber, it alarms. It can give you more time to escape before fire spreads.  
This unit can ONLY give an early warning of developing fires if it is installed, maintained and  
located where smoke can reach it, and where all residents can hear it, as described in this  
manual. This unit will not sense gas, heat, or flame. It cannot prevent or extinguish fires.  
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 the first-to-second floor stairway, and at the bottom of the basement stairway.  
7. If the Green power indicator light does not light, TURN OFF POWER TO THE  
JUNCTION BOX and recheck all connections. If all connections are correct and  
the Green power indicator still does not light when you restore the power, the unit  
should be replaced immediately.  
• Never disconnect the AC power to quiet an unwanted alarm. Disconnecting  
the power disables the Alarm so it cannot sense smoke. This will remove your  
protection. Instead open a window or fan the smoke away from the unit.  
The alarm will reset automatically.  
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8. Single Station Alarms: Test each Smoke Alarm. Press and hold the Test/Silence  
button until the unit alarms.  
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.  
Understand The Different Type of Smoke Alarms  
A. Unswitched 120VAC  
60 Hz source  
B. To additional units; Maximum = 18 total  
(Maximum 12 Smoke Alarms)  
• If the unit alarms get everyone out of the house immediately.  
Battery powered or electrical? Different Smoke Alarms provide different types of  
protection. See “About Smoke Alarms” for details.  
Interconnected Alarms: Press and hold the Test/Silence button until the unit alarms.  
All interconnected Alarms should sound. The other Alarms sounding only tests the  
interconnect signal between Alarms. It does not test each Alarm’s operation. You  
must test each Alarm individually to check if the Alarm is functioning properly.  
Know Where To Install Your Smoke Alarms  
• ELECTRICAL SHOCK HAZARD: Attempting to disconnect the power connector  
from the unit when the power is on may result in electrical shock, serious injury  
or death.  
1. Smoke Alarm  
4. Wire Nut  
7. Interconnect Wire  
(Orange)  
Fire Safety Professionals recommend at least one Smoke Alarm on every level of your  
home, in every bedroom, and in every bedroom hallway or separate sleeping area. See  
“Recommended Locations For Smoke Alarms” and “Locations To Avoid For Smoke  
Alarms” for details.  
2. Ceiling or Wall  
3. Power Connector  
5. Junction Box  
8. Hot Wire (Blk)  
When an interconnected system of AC powered units is in alarm, the alarm indicator light on  
the unit(s) that initiated the alarm will blink rapidly. It will remain OFF on any remaining units.  
If the unit alarms and you are certain that the source of smoke is not a fire—cooking smoke  
or an extremely dusty furnace, for example—open a nearby window or door and fan the  
smoke away from the unit. Use the Silence Feature to silence the alarm. This will silence the  
alarm, and once the smoke clears the unit will reset itself automatically.  
6. Neutral Wire (Wht)  
If any unit in the series does not alarm, TURN OFF POWER and recheck connections.  
If it does not alarm when you restore power, replace it immediately.  
Know What Smoke Alarms Can and Can’t Do  
A Smoke Alarm can help alert you to fire, giving you precious time to escape. It can  
only sound an alarm once smoke reaches the sensor. See “Limitations of Smoke  
Alarms” for details.  
Check Your Local Building Codes  
This Smoke Alarm is designed to be used in a typical single-family home. It alone will not  
meet requirements for boarding houses, apartment buildings, hotels or motels. See “Special  
Compliance Considerations” for details.  
OPTIONAL LOCKING FEATURES  
Locking Features (Continued)  
The optional locking features are designed to discourage unauthorized removal of the battery or alarm. It is not necessary to activate the locks in single-family households where  
unauthorized battery or alarm removal is not a concern.  
TO LOCK THE MOUNTING BRACKET  
These Smoke Alarms have two separate locking features: one to lock the battery compartment, and the other to lock the Smoke Alarm to the mounting bracket.  
You can choose to use either feature independently, or use them both.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the Smoke  
Alarm is installed before removing it from the mounting bracket. Failure to turn off  
the power first may result in serious electrical shock, injury or death.  
1. Using needle-nose pliers or utility knife,  
detach one locking pin from mounting  
bracket.  
Locking Pin  
Tools you will need: • Needle-nose pliers or utility knife • Standard Flathead screwdriver.  
Both locking features use locking pins, which are molded into the mounting bracket. Using needle nose pliers or a utility knife, remove one or both pins from the  
mounting bracket, depending on how many locking features you want to use.  
This unit will not alert hearing impaired residents. It is recommended that  
you install special units which use devices like flashing strobe lights to alert  
hearing impaired residents.  
INSTALLING SMOKE ALARMS IN MOBILE HOMES & RVS  
2. Insert the locking pin into the  
lock located on the base as shown  
in the diagram.  
For minimum security install one Smoke 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. Smoke Alarms should be installed where temperatures normally remain between 40˚ F  
(4˚ C) and 100˚ F (38˚ C). WARNING: Test units used in RVs after the vehicle has been  
in storage, before every trip, and once a week while in use. Failure to test units used  
in RVs as described may remove your protection.  
To permanently remove either lock insert a flathead screwdriver between the locking pin and the lock, and pry the pin out of the lock.  
Installation of this unit must conform to the electrical codes in your area;  
Articles 210 and 300.3 (B) of NFPA 70 (NEC), NFPA 72, NFPA 101; ICC; SBC  
(SBCCI); UBC (ICBO); NBC (BOCA); OTFDC (CABO), and any other local or  
building codes that may apply. Wiring and installation must be performed by  
a licensed electrician. Failure to follow these guidelines may result in injury  
or property damage.  
TO LOCK THE BATTERY COMPARTMENT  
(Model 9120B Only)  
TO UNLOCK THE BATTERY COMPARTMENT  
(Model 9120B Only)  
3. When you attach the Smoke  
Alarm to the mounting  
bracket, the locking pin’s  
head will fit into a notch on  
the bracket.  
Do not lock the battery compartment until you have activated the battery and  
tested the battery back-up.  
This unit must be powered by a 24-hour, 120V AC pure sine wave 60 Hz  
circuit. Be sure the circuit cannot be turned off by a switch, dimmer, or  
ground fault circuit interrupter. Failure to connect this unit to a 24-hour  
circuit may prevent it from providing constant protection. Unit may be  
connected to an arc fault circuit interrupter.  
AGENCY PLACEMENT RECOMMENDATIONS  
NFPA 72 (National Fire Code) Chapter 11  
“For your information, the National Fire Protection Association's Standard 72, reads  
as follows:  
Once the Smoke Alarm is installed, you must disconnect it from the AC power before  
unlocking the battery compartment.  
LIMITED WARRANTY  
1. Activate the battery back-up by removing the  
“Pull to Activate Battery Back-Up” tab.  
BRK Brands, Inc., ("BRK") the maker of BRK® brand and First Alert® brand products,  
warrants that for a period of ten years from the date of purchase, this product will be free  
from defects in material and workmanship. BRK, at its option, will repair or replace this  
product or any component of the product found to be defective during the warranty  
period. Replacement will be made with a new or remanufactured product or component.  
If the product is no longer available, replacement may be made with a similar product of  
equal or greater value. This is your exclusive warranty.  
2. Push and hold test button until the alarm  
sounds: 3 beeps, pause, 3 beeps, pause.  
This Smoke Alarm must have AC or battery power to operate. If the AC  
power fails, battery back-up will allow the alarm to sound for at least 4  
minutes. If AC power fails and the battery is weak, protection should last for  
up to 7 days. If AC power fails and the battery is dead or missing, the alarm  
cannot operate.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the Smoke Alarm  
is installed before removing it from the mounting bracket. Failure to turn off the power  
first may result in serious electrical shock, injury or death.  
11.5.1 One- and Two-Family Dwelling Units.  
11.5.1.1 Smoke Detection. Where required by applicable laws, codes, or standards for the  
specified occupancy, approved single- and multiple-station Smoke Alarms shall be installed  
as follows: (1) In all sleeping rooms. Exception: Smoke Alarms shall not be required in  
sleeping rooms in existing one- and two-family dwelling units. (2) Outside of each separate  
sleeping area, in immediate vicinity of the sleeping rooms. (3) On each level of the dwelling  
unit, including basements. Exception: In existing one- and two family dwelling units,  
approved Smoke Alarms powered by batteries are permitted.  
TO UNLOCK THE MOUNTING BRACKET  
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.  
If the unit does not alarm during testing, DO  
NOT lock the battery compartment! Install a  
new battery and test again. If the Smoke Alarm  
still does not alarm, replace it immediately.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the Smoke  
Alarm is installed before removing it from the mounting bracket. Failure to turn off  
the power first may result in serious electrical shock, injury or death.  
Never disconnect the power from an AC powered unit to stop an unwanted  
alarm. Doing so will disable the unit and remove your protection. In the case  
of a true unwanted alarm open a window or fan the smoke away from the  
unit. The alarm will reset automatically when it returns to normal operation.  
Never remove the batteries from a battery operated unit to stop an unwanted  
alarm (caused by cooking smoke, etc.). Instead open a window or fan the  
smoke away from the unit. The alarm will reset automatically.  
Always discharge the branch circuit before servicing an AC or AC/DC Smoke Alarm.  
First, turn off the AC power at the circuit breaker or fuse box. Next, remove the battery  
from Smoke Alarms with battery back-up. Finally, press and hold the test button for 5-10  
seconds to discharge the branch circuit.  
A.11.8.3 Are More Smoke Alarms Desirable? The required number of Smoke Alarms might  
not provide reliable early warning protection for those areas separated by a door from the  
areas protected by the required Smoke Alarms. For this reason, it is recommended that the  
householder consider the use of additional Smoke Alarms for those areas for increased  
protection. The additional areas include the basement, bedrooms, dining room, furnace  
room, utility room, and hallways not protected by the required Smoke Alarms. The installation  
of Smoke Alarms in kitchens, unfinished attics, or garages is not normally recommended, as  
these locations occasionally experience conditions that can result in improper operation.”  
3. Using needle-nose pliers or a utility knife,  
detach one locking pin from the mounting  
bracket.  
1. Remove the Smoke Alarm from the mounting bracket. If the unit is locked to the  
bracket, see the section “To Unlock the Mounting Bracket.”  
Always discharge the branch circuit before servicing an AC or AC/DC Smoke Alarm.  
First, turn off the AC power at the circuit breaker or fuse box. Next, remove the battery  
from Smoke Alarms with battery back-up. Finally, press and hold the test button for  
5-10 seconds to discharge the branch circuit.  
2. Disconnect the power connector by gently prying it  
away from the back of the Smoke Alarm.  
Connect this unit ONLY to other compatible units. See “How To Install This  
Smoke Alarm” for details. Do not connect it to any other type of alarm or  
auxiliary device. Connecting anything else to this unit may damage it or  
prevent it from operating properly.  
3. Insert a flathead screwdriver under the head of  
the locking pin, and gently pry it out of the battery  
compartment lock. (If you plan to relock the battery  
compartment, save the locking pin.)  
4. Push the locking pin through the black  
dot on the label on the back of the Smoke  
Alarm.  
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.  
The battery compartment resists closing unless a battery is installed. This  
warns you the unit will not operate under DC power without a battery.  
4. To relock the battery compartment, close the battery  
door and reinsert locking pin in lock.  
Do not paint over the unit. Paint may clog the openings to the sensing  
chamber and prevent the unit from operating properly.  
5. Reconnect the power connector to the back of the  
Smoke Alarm, reattach the Smoke Alarm to the  
mounting bracket, and restore the power.  
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: BRK Brands, Inc., 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.  
LOCATIONS TO AVOID FOR SMOKE ALARMS  
For best performance, AVOID installing Smoke Alarms in these areas:  
When replacing the battery, always test the Smoke Alarm before relocking the battery  
compartment.  
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  
1. Insert a flathead screwdriver between the mounting bracket pin and the mounting  
bracket.  
2. Pry the Smoke Alarm away from the bracket by turning both the screwdriver and the  
Smoke Alarm counterclockwise (left) at the same time.  
BRK® is a registered trademark of BRK Brands, Inc.  
Printed in Mexico  
M08-0134-004 K1 08/08  
First Alert® is a registered trademark of the First Alert Trust.  
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