GE 2-9079 - Manual (Page 5)

3
B ATTERY I NDICATOR
If the battery icon appears in the display, you need to
replace the batteries.
U SING THE AC A DAPTER
You must use the AC power supply in order for the
new call indicator light and the display backlight to
work. When using AC power, the batteries serve as a
backup in the event of power failure.
NOTE: Only use the
Thomson 5-2408 AC
adapter that came with
this unit. Using other
adapters may damage
the unit.