Radio Shack SYSTEM 440 - Manual (Page 10)

10
INSTALLING THE BATTERY
You need one 9-volt battery (not supplied) to protect the module’s mem-
ory if power fails. We recommend an alkaline battery, such as Ra-
dioShack Cat. No. 23-553.
Note: You must also connect the supplied AC adapter to use the mod-
ule.
Follow these steps to install the battery.
1. If the phone lines are already
connected, unplug them from
the module.
2. Use a coin to turn the lock on
the bottom of the module to
OPEN , then slide off the battery
compartment cover.
3. Insert the fresh battery into the
compartment, aligning the + on
the battery with the
+ on the
case.
CAUTION: DISCONNECT TELEPHONE LINE BEFORE CHANGING BATTERIES ATTENTION: DEBRANCHER LE TELEPHONE AVANT DE REMPLACER LES PILES LOCK OPEN
WALL
PHONE
9VDC
!
LOCK
OPEN/
43-974.fm Page 10 Monday, August 16, 1999 4:27 PM