1. Remove
the
two
keys
first.
2. Unfasten the two screws.
Push up the back cover to open
First open the lower part of
backcover for around 1cm.
Please note that open too
wide may lead to damage to
the device.
3.
Open
the
back
cover
and
connect
the
device
according
to
the
wiring
diagram
.
4
.
Fix
the
backcover
on
the
wall
Reassemble
the
device. (according
to
1,
2
and
3
in
reversed
order.
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