Installing Batteries - Philips LRM3320W/27 Manual

Low Battery Indicator
The alarm has a low battery indicator light.
Push the 'Battery Test' button located inside
the battery compartment. If the green light
illuminates when the button is pressed, the
batteries are still good. If the light fails to
illuminate, replace all batteries.

Installing Batteries

The alarm requires (4) LR44 (or 357) button
batteries (included). Average battery life for
typical usage is up to one year.
1. Slide cover off the battery compartment
located on the front of the main unit.
2. Insert (4) LR44 button batteries noting
polarity.
3. Replace battery compartment cover.
4