Conrad FS20 IRP Bedienungsanleitung Seite 40

Handheld transmitter "FS20 S20-2"
The "FS20 S20-2" is a revised version of the "FS20 S20", where the photo diode was already
considered in the circuit board layout (D7).
After removing the batteries, unscrewing the three housing screws and removing the bottom
of the housing, all you have to do is solder the photo diode onto the corresponding connection
pads and drill a hole into the top part of the housing.
The anode connection can be shortened to the length of the cathode connection.
Both connections then have to be bent in line with the illustration so that they have sufficient
distance to the underlying HF receiver module on the one hand and also ensure that the photo
diode is positioned securely in the housing opening.
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