3.
Attach the mounting ring to the electrical junction box.
4.
To activate 9 volt battery and smoke alarm, pull and remove the thin colored plastic tab at
battery door hinge. Discard plastic tab.
5.
Plug the AC QUICK CONNECTORS together. Push and turn the smoke alarm clockwise onto
the mounting ring.
6.
See "TAMPER LOCKING PIN."
7.
Turn on AC power and check the LED's for proper operation. The green LED lights to indicate
AC power. The red LED will flash every 40-60 seconds to indicate proper operation.
Early warning fire detection is best achieved by the installation of fire detection equipment in
all rooms and areas of the household as follows: A smoke alarm installed in each separate
sleeping area (in the vicinity of, but outside of, the bedrooms) and heat or smoke alarms in
living rooms, dining rooms, kitchens, hallways, attics, furnace rooms, closets, utility storage
rooms, basements and attached garages. Test the smoke alarm weekly to assure proper
operation.
For units that are used as single smoke alarms, do not connect the yellow wire to anything.
Insulate this wire (tape it) in place to make certain the yellow wire cannot contact any metal
parts.
Interconnected units can provide earlier warning of fire than stand-alone units, especially if a
fire starts in a remote area of the dwelling. If any unit in the series senses smoke, all units will
alarm. This smoke alarm may be interconnected with as many as 11 other USI ELECTRIC
model smoke alarms and 6 other units which may be a combination of USI-2430 Heat Alarms
or USI-960 Relay Modules for a total of not more than 18 interconnected devices.
The yellow wire is used only for multiple station operation with USI ELECTRIC Models USI-
1103, USI-1203, USI-1204, USI-1208 AND USI-1213 only. Connecting this yellow wire to any
other circuits may result in damage. When smoke alarms are interconnected, all units must
be powered from a single AC branch circuit. If local codes do not permit be sure the neutral
wire is common to both phases. The maximum wire run distance between the first and last
smoke alarm in an interconnected system is 1,000 feet. NOTE: Use standard household wire
(18 gauge or larger, rated at least 300V, as required by local codes) available at all electrical
supply/hardware stores.
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