First Alert SC9120B User Manual

First Alert SC9120B User Manual

Smoke & carbon monoxide alarm
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USER'S MANUAL
Smoke & Carbon
Monoxide Alarm
AC Powered Smoke &
Carbon Monoxide Alarm
with Battery Back-up,
Silence Feature and
Latching Alarm
Model SC9120B
~
Input: 120V AC
60 Hz, 0.09A
IMPORTANT! PLEASE READ CAREFULLY AND SAVE
This user's manual contains important information about your Alarm's
operation. If you are installing the Alarm for use by others, you must leave
this manual - or a copy of it - with the end user.
Printed in Mexico
M08-0094-004 K1 10/07

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Fire Safety Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Where To Install This Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Where This Alarm Should Not Be Installed . . . . . . . . . . . . . . . . . . . .2
Before You Begin Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How To Install This Smoke/CO Alarm . . . . . . . . . . . . . . . . . . . . . .3-4
Using the Optional Locking Features . . . . . . . . . . . . . . . . . . . . . . . . .5
How Your Smoke/CO Alarm Works . . . . . . . . . . . . . . . . . . . . . . . . . .6
Understanding the Light and Horn Patterns . . . . . . . . . . . . . . . . . . .6
If Your Smoke/CO Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
What To Do First-Identify the Type of Alarm . . . . . . . . . . . . . . . . . . .6
What To Do if CO is Detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
What To Do if Smoke is Detected . . . . . . . . . . . . . . . . . . . . . . . . .6-7
"Smart Interconnect" Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Using the Silence Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
The "Latching Alarm" Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Weekly Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Regular Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
What You Need To Know About CO . . . . . . . . . . . . . . . . . . . . . . . . . . .8
What is CO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Symptoms of CO Poisoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Finding the Source of CO After an Alarm . . . . . . . . . . . . . . . . . . . . .8
Potential Sources of CO in the Home . . . . . . . . . . . . . . . . . . . . . . . .8
Regulatory Information For Smoke/CO Alarms . . . . . . . . . . . . . . .8-9
Regulatory Information for CO Alarms . . . . . . . . . . . . . . . . . . . . . . .8
Regulatory Information for Smoke Alarms . . . . . . . . . . . . . . . . . . . .9
About Smoke Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Special Compliance Considerations . . . . . . . . . . . . . . . . . . . . . . . .9
General Limitations Of Smoke/CO Alarms . . . . . . . . . . . . . . . . . . .10
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
© 2007 BRK Brands, Inc., a Jarden Corporation company (NYSE: JAH)
3901 Liberty Street Road, Aurora, IL 60504-8122
All rights reserved.
Consumer Affairs: (800) 323-9005
www.brkelectronics.com • www.firstalert.com
LISTED TO
UL 217
Model
AND
SC9120B
UL 2034
1

INTRODUCTION

Thank you for choosing BRK Brands, Inc. for your Smoke and Carbon
Monoxide Alarm needs. You have purchased a state-of-the-art Smoke &
CO Alarm designed to provide you with early warning of a fire or Carbon
Monoxide. Key features include:
Smoke & Carbon Monoxide Combination Alarm. One alarm protects
against two deadly household threats.
Intelligent Sensing Technology designed to help reduce unwanted or
nuisance alarms.
Smart Interconnect can be interconnected to BRK Smoke Alarms.
One interconnect wire carries both smoke and CO alarm signals.
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 that
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.
Improved UV Resistance keeps the alarm from discoloring over time.
All BRK
®
and First Alert
®
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 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.

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 elec-
trical 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.
Continued...

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Do you have a question about the SC9120B and is the answer not in the manual?

Questions and answers

Claudia Cook
April 2, 2025

How to replace the battery

1 comments:
Mr. Anderson
April 2, 2025

To replace the battery in a First Alert SC9120B:

1. Locate the small locking pin inside the unit near the battery compartment.
2. Use a small Phillips head screwdriver to push the pin out.
3. Once the pin is removed, press the latch and open the battery compartment.
4. Remove the old 9-volt battery.
5. Insert a new 9-volt battery, matching the positive and negative terminals as marked inside.
6. Close the compartment securely.

This answer is automatically generated

Summary of Contents for First Alert SC9120B

  • Page 1: Table Of Contents

    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.
  • Page 2: 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).
  • Page 3: Parts Of The Smoke Alarm

    BEFORE YOU BEGIN INSTALLATION This unit is designed to be mounted on any standard wiring junction box up to a 4-inch (10 cm) size, on either the ceiling or wall. Read “Where to Install This Alarm” and “Where This Alarm Should Not Be Installed ”...
  • Page 4: Installation

    Heat Alarm Models HD6135F, HD6135FB; BRK Electronics ® CO Alarm Models CO5120BN, CO5120PDBN; Smoke/CO Alarm Model SC6120B, SC9120B; and First Alert SA4120, SA4120B, SA4121B, SA4919B, SA100B, SC7010B, SC7010BV; Accessory devices models RM3, RM4, SL177. Interconnected units must meet ALL of the following requirements: •...
  • Page 5: Using The Optional Locking Features

    USING THE OPTIONAL LOCKING FEATURES 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. These Smoke/CO Alarms have two separate locking features: one locks the battery compartment, and the other locks the Smoke/CO Alarm to the mounting bracket.
  • Page 6: Smoke Alarm Cover Overview

    THE COVER OF YOUR SMOKE/CO ALARM 1. Test/Silence Button: Press and hold to activate test, or to silence the alarm. 2. POWER Light (GREEN)/ SMOKE ALARM Light (RED) 3. CO ALARM Light (RED) 4. Battery Drawer 5. (Behind the Cover) Alarm Horn: 85dB audible alarm for test, alarm, and unit malfunction warning.
  • Page 7: What To Do In Case Of Fire

    WHEN THE SMOKE ALARM IS SILENCED... The Smoke Alarm will remain silent for up to 15 minutes and then return to normal operation. If the smoke has not cleared within the silence period or if smoke increases to a critical level during the silence period, the unit will go back into alarm.
  • Page 8: What You Need To Know About Co

    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.
  • Page 9: Installing In Mobile Homes & Rvc

    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 bed- room. In new construction, the Smoke Alarms must be AC powered and interconnected. See “Agency Placement Recommendations” for details.
  • Page 10: General Limitations Of Smoke/Co Alarms

    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).
  • Page 11: Limited Warranty

    Month/Year BRK Electronics First Alert ® is a registered trademark of BRK Brands, Inc. ® is a registered trademark of the First Alert Trust. Printed in Mexico M08-0094-004 K1 10/07...

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