6
PREPARATION
INSTALLING A BACKUP
BATTERY
You can install an optional 9V backup
battery so if the AC power fails or you
unplug the phone ( appears), the Sys-
tem 1250 will save the memory numbers
and Caller ID records. We recommend
you use an alkaline battery, such as Ra-
dioShack Cat. No. 23-553.
Caution:
Use only a fresh battery of the
required size and recommended type.
Follow these steps to install a battery.
1. Use a Phillips screwdriver to remove
the battery compartment cover’s
screw on the bottom of the system,
then remove the cover.
2. Place a fresh battery into the com-
partment as indicated by the polarity
symbols (+ and –) marked inside.
3. Replace the cover and secure it with
the screw.
The System 1250 automatically tests
the battery each time it receives a call. If
appears or the display dims, re-
place the battery.
Important:
You must install the fresh
battery within 2 minutes after removing
the old battery. Otherwise, you might
lose the information stored in the
phone’s memory.
Cautions:
• Always remove old or weak batter-
ies. Batteries can leak chemicals
that can destroy electronic parts.
• Dispose of old batteries promptly
and properly. Do not burn or bury
them.
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