First Alert SC9120B HOW Your SMOKE/CO Alarm Works, Understanding the Light Horn Patterns

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HOW YOUR SMOKE/CO ALARM WORKS

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.

UNDERSTANDING THE LIGHT

AND HORN PATTERNS

Condition

LED (Red or Green

Horn

 

Lights)

 

POWER UP

Green LED

Horn remains silent

 

flashes ON

 

 

once, then

 

 

shines continuously

 

DURING TESTING

Smoke & CO

Horn pattern:

 

Red LEDs flash

(Smoke) 3 beeps,

 

once every

pause, 3 beeps,

 

second during

pause;

 

their respective

(CO) 4 beeps, pause,

 

repetitive horn

4 beeps, pause

 

patterns

 

LOW OR MISSING

Green LED

Horn “chirps”

BATTERY

flashes

about once a

 

(with horn)

minute

ALARM CONDITION

Smoke or CO

Horn pattern:

Interconnected Series

Red LED

(CO) 4 beeps,

of Smoke/CO Alarms

flashes rapidly

pause, 4 beeps,

 

on the unit that

pause repeating

 

triggered the alarm.

on all CO Alarms and

 

LEDs on the

“Smart Interconnect”

 

Alarms;

 

other alarms in

(Smoke) 3 beeps,

 

an interconnected

pause, 3 beeps,

 

series will not flash.

pause repeating on all

 

 

Smoke, Heat, and

 

 

“Smart Interconnect”

 

 

Alarms

IN ALARM SILENCE

Red Smoke or CO

Horn remains silent:

MODE

LED flashes

CO for 4 minutes;

 

once every

Smoke for up

 

second on

to 15 minutes.

 

initiating unit

Horn will sound

 

 

if Smoke or CO

 

 

levels increase.

“LATCHING” ALARM

Red Smoke

Horn remains silent

INDICATOR

and/or CO

 

 

LED flashes

 

 

once every 5 seconds

 

MALFUNCTION

Green LED flashes 3

Horn sounds 3

 

times synchro-

consecutive

 

nized with 3

rapid chirps

 

rapid chirps

every minute

IF YOUR SMOKE/CO ALARM SOUNDS

WHAT TO DO FIRST–IDENTIFY THE TYPE OF ALARM

Type of Alarm

What You See and Hear

Carbon Monoxide

CO Light:

(CO)

Flashing RED

 

Horn: 4 beeps,

 

pause, 4 beeps,

 

pause

Smoke

Smoke Light:

 

Flashing RED

 

Horn: 3 beeps,

 

pause, 3 beeps,

 

pause

WHAT TO DO IF CARBON MONOXIDE IS DETECTED

“ALARM-MOVE TO FRESH AIR”

If you hear the alarm horn sound 4 beeps, pause, 4 beeps, pause, and the RED CO light is flashing, move everyone to a source of fresh air.

Actuation of your CO Alarm indicates the presence of carbon monoxide (CO) which can kill you. In other words, when your CO Alarm sounds, you must not ignore it!

IF THE CO ALARM SOUNDS:

1.Operate the Test/Silence button.

2.Call your emergency services, fire department or 911. Write down the number of your local emergency service here:

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3.Immediately move to fresh air—outdoors or by an open door or window. Do a head count to check that all persons are accounted for. Do not re-enter the premises, or move away from the open door or window until the emergency services responder has arrived, the premises have been aired out, and your Smoke/CO Alarm remains in its normal condition.

4.After following steps 1-3, if your Smoke/CO Alarm reactivates within a 24-hour period, repeat steps 1-3 and call a qualified appliance technician to investigate for sources of CO from fuel-burning equipment and appliances, and inspect for proper operation of this equipment. If problems are identified during this inspection have the equipment serviced immediately. Note any combustion equipment not inspected by the technician, and consult the manufacturers’ instructions, or contact the manufacturers directly, for more information about CO safety and this equipment. Make sure that motor vehicles are not, and have not, been operating in an attached garage or adjacent to the residence. Write down the number of a qualified appliance technician here:

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WHAT TO DO IF SMOKE IS DETECTED

If you hear the alarm horn sound 3 beeps, pause, 3 beeps, pause and the RED SMOKE light is flashing, smoke has been detected. Evacuate everyone from the building.

If the unit alarms and you are not testing the unit, it is warning you of a potentially dangerous situation that requires your immediate attention. NEVER ignore any alarm. Ignoring the alarm may result in injury or death.

Never 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.

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. It will remain OFF on any remaining units.

If the unit alarms, get everyone out of the dwelling immediately.

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.

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Contents Table of Contents Fire Safety TipsIntroduction Where this Alarm should not be Installed InstallationWhere to Install this Alarm Avoiding Dead AIR SpacesBefore YOU Begin Installation HOW to Install this SMOKE/CO AlarmAfter an Alarm Latching Special Requirements for Interconnected AlarmsDuring an Alarm Compatible Interconnected UnitsUsing the Optional Locking Features Battery Compartment LockMounting Bracket Lock HOW Your SMOKE/CO Alarm Works If Your SMOKE/CO Alarm SoundsUnderstanding the Light Horn Patterns Weekly Testing Regular MaintenanceRegulatory Information for SMOKE/CO Alarms What YOU Need to Know about COAgency Placement Recommendations Regulatory Information for Smoke AlarmsInstalling Smoke Alarms in Mobile Homes & RVS About Smoke AlarmsGeneral Limitations of SMOKE/CO Alarms Troubleshooting GuideMalfunction SIGNAL. Unit needs to be Limited Warranty How to Obtain Warranty Service