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60
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12. Changing the battery
1.
Carefully pull the operating unit out of the wall bracket.
2.
Carefully press the battery out of the battery compartment
using a flat, non-conductive object (e.g. a plastic rod).
3.
Replace the battery with a battery of the same type "CR2450".
Observe the correct polarity when inserting a new battery.
4.
Then insert the operating unit into the wall bracket again .
i
The positive terminal
should point outwards.
If the battery has discharged, the red LED flashes three times
when any random button is pressed for a short time. The battery
must be replaced.