First Alert 9120 User Manual
The Mounting Bracket:
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.
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.
The Power Connector:
The power connector plugs into a power input block on
the Smoke Alarm. It supplies the unit with AC power.
The power connector plugs into a power input block on
the Smoke Alarm. It supplies the unit with AC power.
• The black wire is “hot.”
• The white wire is neutral.
• The orange wire is used for interconnect.
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.
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.
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The Parts of This Unit
1
Mounting Bracket
2
Mounting Slots
3
Locking Pins (break out of bracket)
4
Hot (Black) AC Wire
5
Neutral (White) AC Wire
6
Interconnect (Orange) Wire
7
Latch to Open Battery Compartment
8
Swing-Out Battery Compartment
9
Quick-Connect Power Connector
HOW TO INSTALL THIS SMOKE ALARM
THE PARTS OF 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.
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.
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.
generator or solar power, light dimmer on the same circuit or mounted near fluorescent lighting. Excessively noisy power may cause damage to your
Alarm.
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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.
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.
• This unit will not alert hearing impaired residents. It is recommend-
ed that you install special units which use devices like flashing
strobe lights to alert hearing impaired residents.
strobe lights to alert hearing impaired residents.
• Installation of this unit must conform to the electrical codes in your
area; Article 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 to follow these
guidelines may result in injury or property damage.
(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.
• 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.
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.
• 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.
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.
• 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 auto-
matically 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.
protection. In the case of a true unwanted alarm open a window
or fan the smoke away from the unit. The alarm will reset auto-
matically 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.
• 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.
other type of alarm or auxiliary device. Connecting anything else
to this unit may damage it or prevent it from operating properly.
• The battery compartment resists closing unless a battery is
installed. This warns you the unit will not operate under DC power
without a battery.
without a battery.
• Do not paint over the unit. Paint may clog the openings to the
sensing chamber and prevent the unit from operating properly.
Before You Install This Smoke Alarm, Continued