In order to change the battery you will need:
Two Phillips screwdrivers, sizes PH0 and PH1
A replacement battery, type Renata CR1225
⚠
Attention
Take care not to touch any electrical contacts while
changing the battery. Electrostatic discharges (ESD)
can damage the device immediately or in the long
run.
1.
Unscrew the screws marked red in the image, using
the PH0 screwdriver. Then remove the back cover of
the casing.
2.
A second screw is located inside the casing. It is
marked red in the image. Undo this screw using the
PH1 screwdriver.
3.
Carefully lift the circuit board up at the edge opposite
the sensor cable.
4.
Press the old battery out of the fixture using one of
the screwdrivers.
5.
Press the new battery into the fixture. If required, use
the screwdriver to push the battery into place.
6.
Place the circuit board back into the casing.
Tighten the screw inside the casing as well as the two
screws that fix the back cover.
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