3
TO LOCK THE BATTERY COMPARTMENT
Do not lock the battery compartment until you install the batteries and
test the CO Alarm.
If the unit does not alarm during testing,
DO NOT lock the battery compartment!
Install new batteries and test again.
If the CO Alarm still does not alarm, replace
it immediately.
1. Using needle-nose pliers, detach one
locking pin from the mounting bracket.
2. After batteries are inserted, then push
the locking pin through the hole near the
battery door latch on the back of the CO
Alarm.
OPTIONAL LOCKING FEATURES
TO LOCK THE MOUNTING BRACKET
1. Using needle-nose pliers, detach one
locking pin from the mounting bracket.
2. Insert the locking pin through the hole on
the back of the CO Alarm as shown in the
diagram.
3. When you attach the CO Alarm to the
mounting bracket, the locking pin’s head
will fit into a notch on the bracket.
The optional locking features are designed to prevent 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 to lock the battery compartment, and the other to lock 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, which are molded into the mounting bracket. Depending on which locking features you
use, remove one or both pins from the mounting bracket using needle-nose pliers.
To permanently remove either locking pin, insert a flathead screwdriver between the locking pin and the lock, and pry
the pin out of the lock.
TO UNLOCK THE BATTERY COMPARTMENT
1. Remove the CO Alarm from the
mounting bracket. If the unit is locked
to the bracket, see the section
“To Unlock the Mounting Bracket.”
2. Insert a flathead screwdriver under the
head of the locking pin, and gently pry
it out of the battery compartment lock.
(If you plan to relock the battery
compartment, save the locking pin.)
3. To relock the battery compartment,
close the battery door and reinsert
locking pin in lock.
4. Reattach the CO Alarm to the mounting
bracket.
When replacing the batteries, always test
the Alarm before relocking the battery
compartment.
TO UNLOCK THE MOUNTING BRACKET
1. Insert a flathead screwdriver into the
rectangular cut-out on the mounting
bracket nearest to the locking pin.
2. Pry the CO Alarm away from the
bracket by pushing up on the screw-
driver and turning the CO Alarm
counterclockwise (left) at the same
time.
