PREPARATION
INSTALLING A BATTERY
You need one 9V battery (not supplied) to provide backup pow- er for the
Cautions:
•Use only a fresh battery of the required size and recom- mended type.
•Always remove old or weak batteries. They can leak chem- icals that can damage electronic circuits.
Follow these steps to install the battery.
9 VOLT BATTER Y
Note: The screw is packed separately. Insert the screw into the battery compartment cover when you first install the battery.
1.Use a small Phillips screwdriver to remove the screw from the battery compartment cover.
2.Lift the cover in the direction of the arrow.
3.Place a fresh battery in the compartment, as indicated by the polarity symbols (+ and – ) marked inside.
4.Replace the battery compartment cover and tighten the screw.
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