17
BACKUP BATTERY
Battery Back Up
1. To set up battery backup unplug the Main unit from the 120v
power supply.
2. Install 5 new AA alkaline batteries in battery compartment
located on the bottom of the Main unit.
3. The LED display will be dimmed when running on the battery
backup only. Upon any alert such as doorbell or telephone
the display will be at its maximum brightness. After any alert
the display will go dim again to help conserve battery power.