To replace the batteries (without removing Alarm from the ceiling or wall):
1. Open the battery compartment.
2. Press tabs A and B as shown in the diagram and remove each battery.
3. Insert the new batteries, making sure they snap completely into the battery compartment. Match
on the ends of the batteries with the A
terminals on the unit.
4. Close the battery compartment, and then test the unit by pressing the Test/Silence button.
Answered on 1/21/2014 by Bg