BRK electronic 4120B Smoke Alarm User Manual


 
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4. To relock the battery compartment, close the
battery door and reinsert locking pin in lock.
5. Reconnect the power connector to the back of the
smoke alarm, reattach the smoke alarm to the
mounting bracket, and restore the power.
IMPORTANT!
When replacing the battery, always test the smoke
alarm before relocking the battery compartment.
To Lock The Mounting Bracket
:
1. Using needle-nose
pliers, detach one
locking pin from the
mounting bracket.
2. Insert the locking pin into the lock located on
the pivoting hinge of the battery door.
3. When you attach the smoke alarm to the
mounting bracket, the locking pin’s head will
fit into a notch on the bracket.
To Un-Lock The Mounting Bracket
:
DANGER!
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.
WARNING!
Always discharge the branch circuit before
servicing an AC or AC/DC smoke alarm. First,
turn off the AC power at the circuit breaker or
fuse box. Next, remove the battery from smoke
alarms with battery back-up. Finally, press and
hold the test button for 5-10 seconds to
discharge the branch circuit
.
1. Insert a flathead
screwdriver between the
mounting bracket pin
and the mounting
bracket.
2. Pry the smoke alarm away from the bracket
by turning both the screwdriver and the
smoke alarm clockwise (right) at the same
time.