First Alert SA320 User Manual
3
OPTIONAL LOCKING FEATURES
The locking features are designed to discourage unauthorized removal of the batteries or Alarm. It is not necessary to activate the locks in single-family
households where unauthorized battery or Alarm removal is not a concern.
households where unauthorized battery or Alarm removal is not a concern.
These Smoke Alarms have two separate locking features: one to lock the battery compartment, and the other to lock the Smoke Alarm
to the mounting bracket. You can choose to use either feature independently, or use them both.
to the mounting bracket. You can choose to use either feature independently, or use them both.
Tools you will need: • Needle-nose pliers or utility knife • Standard Flathead screwdriver.
Both locking features use locking pins, which are molded into the mounting bracket. Using needle-nose pliers or a utility knife, remove
one or both pins from the mounting bracket, depending on how many locking features you want to use.
one or both pins from the mounting bracket, depending on how many locking features you want to use.
To permanently remove either lock, insert a flathead screwdriver between the locking pin and the lock, and pry the pin out of the lock.
TO LOCK THE BATTERY COMPARTMENT
Do not lock the battery compartment until you have installed the
batteries and tested the alarm.
batteries and tested the alarm.
1. Push and hold Test button until the alarm sounds: 3 beeps, pause,
3 beeps, pause. LED flashes once every second.
If the unit does not alarm during testing, DO NOT lock the battery
compartment! Install new batteries and test again. If the Smoke
Alarm still does not alarm, replace it immediately.
compartment! Install new batteries and test again. If the Smoke
Alarm still does not alarm, replace it immediately.
2. Using needle-nose pliers or a utility knife, detach one locking pin
from the mounting bracket.
3. Push the locking pin through the hole near the battery drawer on the
back of the Smoke Alarm.
TO UNLOCK THE BATTERY COMPARTMENT
1. Remove the Smoke Alarm from the mounting
bracket. If the unit is locked to the bracket, see
the section “To Unlock the Mounting Bracket.”
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.)
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 Smoke Alarm to the mounting
bracket.
When replacing the batteries, always test the Smoke Alarm before relocking
the battery compartment.
the battery compartment.
TO UNLOCK THE MOUNTING BRACKET
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 counterclockwise (left) at the same time.
Alarm counterclockwise (left) at the same time.
TO LOCK THE MOUNTING BRACKET
1. Using needle-nose pliers, detach one locking pin from mounting bracket.
2. Insert the locking pin into the lock located
opposite from the battery drawer as shown
in the diagram.
in the diagram.
3. When you attach the Smoke Alarm to the mounting bracket, the locking
pin’s head will fit into a notch on the bracket.