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2.
Insert the alarm locking pin into the hole as shown. Refer to the diagram below for correct
placement.
TO DEACTIVATE THE LOCKING FEATURE: To remove the smoke alarm for cleaning or servicing,
you must first remove the locking pin, if it has been installed.
1.
Turn off AC power to the circuit.
2.
Use long nose pliers to pull the locking pin out of the hole.
3.
It is now possible to remove the smoke alarm.
WIRING INSTRUCTIONS:
1.
a.
The appropriate power supply is 120 Volt single phase power supplied from a
non-switchable circuit NOT protected by a ground fault circuit interrupter.
b.
Turn off AC power to the circuit before wiring the smoke alarm.
c.
There are three pigtail wires (black, white and yellow) coming from the AC QUICK
CONNECTOR. The proper wire connection is as follows:
WIRES FROM QUICK CONNECTOR
INTERCONNECTION & COMPATIBILITY: Interconnected alarms can provide earlier warning
than stand-alone alarms, especially if a hazard is present in a remote area of the dwelling.
When alarms are interconnected, all alarms will sound when the initiating alarm sounds,
providing more time to escape safely. This alarm may be interconnected with a total of not
more than 24 interconnected devices, i.e. as many as 11 other USI Electric or Universal
brand model smoke alarms or combination smoke and carbon monoxide (CO) alarms or
smoke and carbon monoxide/natural gas alarms; 6 other initiating alarms which may be
a combination of USI Electric or Universal brand CO alarms and heat alarms; and 6 other
non-initiating devices such as USI Electric brand relays.
This alarm can be interconnected with the following compatible alarms and accessories:
MDSCN111, MICN109, MCN108, USI-1204, USI-1209, USI-3204, 5304, MI106, MDS107, MP117,
USI-2430, USI-960, MI106S, MIC1509S, MP116S, MPC122S, SLW127, AMI1061S, AMIC1510S.
When any one of these interconnected models goes into alarm, it will trigger the corresponding
alarm within the interconnected system with respect to their sensing capabilities.
Interconnected CO alarms, or the CO alarm circuit of combination smoke, CO and natural gas
alarms, will only respond if a CO alarm event initiates the alarm. All other alarms remain silent.
Interconnected combination CO and natural gas alarms will only respond if a natural gas
event initiated the alarm. All other alarms remain silent. Natural gas detection is only present
in models MDSCN111, MICN109, MCN108; therefore, a natural gas alarm will NOT trigger the
alarm of non-natural gas sensing models within an interconnected system.
The following alarms can trigger Quick Find
Origination on an interconnected system: USI-1204, USI-1209, USI-1213, USI-3204, USI-2430.
The following alarms cannot be reset through an interconnected system because they do
not have Quick Find
Interconnected smoke alarms, heat alarms and relays will only respond if a smoke alarm
event or heat alarm event initiates the alarm. All CO and natural gas alarms remain silent.
NOTE: Alarms without battery backup will not respond during an AC power failure.
NOTE: The relay, model USI-960, will not respond if a CO or natural gas alarm event initiates
the alarm.
The yellow wire is used only for interconnect (multiple station operations) USI Electric or
Universal model alarms. Connecting this yellow wire to any other circuits may result in
damage and alarm malfunction. All interconnect alarms must be powered from a single circuit.
INSERT ALARM
LOCKING PIN
HERE
BLACK
WHITE
YELLOW
DO NOT TAMPER WITH WIRES WHEN POWER IS ON!
Alarm Origination: USI-1204, USI-1209, USI-3204, USI-2430.
®
CONNECT TO
"HOT" side of AC line
"NEUTRAL" side of AC line
Interconnect wires of other smoke alarms
Alarm Origination, but will not indicate Alarm
®
Page 5
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