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THE BATTERY COMPARTMENT LOCK:
TO LOCK THE BATTERY COMPARTMENT
Do not lock the battery compartment until you have
activated the battery and tested the battery back-up.
1. Activate the battery back-
up by removing the “Pull
to Activate Battery Back-
Up” tab. Push and hold
the test button on the CO
Alarm’s cover until the
alarm sounds: 4 beeps,
pause, 4 beeps, pause.
If the unit does not alarm during testing, DO
NOT lock the battery compartment! Install a
new battery and test again. If it still does not
alarm, replace the CO Alarm immediately.
2. Using needle-nose
pliers or a utility knife,
detach one locking
pin from the mount-
ing bracket.
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The optional locking features are designed to pre-
vent unauthorized removal of the battery or alarm.
It is not necessary to activate the locks in single-
family households where unauthorized battery or
alarm removal is not a concern.
These CO Alarms have two separate locking features:
one locks the battery compartment, and the other
locks the CO Alarm to the mounting bracket. You can
choose to use either feature independently, or use
them both.
Tools you will need: • Needle-nose pliers
• Standard/Flathead screwdriver.
Both locking features use locking pins, molded into
the mounting bracket. Using needle nose pliers or a
utility knife, remove one or both pins, depending on
which locking features you use.
Locking Pin
USING THE OPTIONAL LOCKING FEATURES