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TABLE OF CONTENTS

Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Fire Safety Tips  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Before You Install This Smoke Alarm  . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
How To Install This Smoke Alarm  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Optional Locking Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Understanding the Indicator Lights
and Alarm Horn Patterns  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Weekly Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Regular Maintenance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
If This Smoke Alarm Sounds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
What To Do In Case Of Fire  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Using the Silence Feature  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
“Latching Alarm” Indicator  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
If You Suspect a Problem  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Recommended Locations For Smoke Alarms  . . . . . . . . . . . . . . . . . . . . .6
Locations To Avoid For Smoke Alarms  . . . . . . . . . . . . . . . . . . . . . . . . .6-7
About Smoke Alarms  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Special Compliance Considerations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Limitations of Smoke Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Limited Warranty  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

© 2007 BRK Brands, Inc., a subsidiary of Jarden Corporation.
3901 Liberty Street Road, Aurora, IL 60504-8122
All rights reserved.
Consumer Affairs: (800) 323-9005
www.brkelectronics.com  •  www.firstalert.com

INTRODUCTION

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:

Smart Technology designed to help reduce unwanted or nuisance alarms.

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.

Latching Alarm Indicator easily identifies initiating alarm even after the
alarm condition has subsided.

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.

Dust Cover is included to keep the alarm clean during construction.

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).

Improved UV Resistance keeps the alarm from discoloring over time.

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 addi-
tional one in the kitchen. Have fire escape ladders or other reliable means of
escape from an upper floor in case stairs are blocked.

BEFORE YOU INSTALL THIS SMOKE ALARM

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.

Understand The Different Type of Smoke Alarms

Battery powered or electrical? Different Smoke Alarms provide 
different types of protection. See “About Smoke Alarms” for details.

Know Where To Install Your Smoke Alarms

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.

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.

1

USER’S MANUAL

Smoke Alarms

AC Powered Ionization Smoke
Alarm with Silence and
Latching Features

Model 9120

Input: 120V AC ~, 60 Hz, 0.04A

AC Powered Ionization Smoke
Alarm with Battery Back-up,
Silence and Latching Features

Model 9120B

Input: 120V AC ~, 60 Hz, 0.04A

IMPORTANT! PLEASE READ CAREFULLY AND SAVE

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.

Models 9120

9120B

Printed in Mexico
M08-0134-003   

K1  04/07

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.

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.

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.

Summary of Contents for 9120 Series

Page 1: ...er reliable means of escape from an upper floor in case stairs are blocked BEFORE YOU INSTALL THIS SMOKE ALARM 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 o...

Page 2: ...stall special units which use devices like flashing strobe lights to alert hearing impaired residents Installation of this unit must conform to the electrical codes in your area Articles 210 760 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 t...

Page 3: ...tarts 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 During an Alarm On Initiating Alarm s Red LED s flashes flash rapidly On All Other Alarms Red LED is Off After an Alarm Latching On Initiating Alarm s Green LED s On for 2 seconds Off for 2 seconds On All Other Alarms Green LED s On Red LED ...

Page 4: ...vicing 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 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 2 Disconnect the ...

Page 5: ... alarm will reset auto matically If the unit alarms get everyone out of the house immediately 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 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 I...

Page 6: ...s 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 burn...

Page 7: ... not provide sufficient warning to all residents or meet local fire protection ordinances regulations LIMITATIONS OF SMOKE ALARMS Smoke Alarms have played a key role in reducing deaths resulting from home fires worldwide 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 Smoke alarm...

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