Amplicomms BigTel 50 alarm plus Mode D'emploi page 75

P
HONE SETTINGS
Testing the emergency call unit battery
1. Press and hold the button (1) on the emergency call
unit briefly. The LED (2) lights up.
2. If the LED (2) no longer lights up when the button is
pressed and held, replace the battery.
Replacing the battery
1. Remove the screw on the rear side of the emergency
call unit using a small, crosstip screwdriver.
2. Insert the tip of a small screwdriver in the notch (3) and
open the housing.
3. Replace the battery. Only use batteries of the same
type. Pay attention to correct polarity.
4. Close the housing.
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