This is a replacement wireless transmitter circuit board (often called the SIM board - Sensor Interface Module) for the UK and EU versions of the wireless VP2 ISS. This part is compatible with wireless VP2 stations made before 2016 (revision AR or earlier), but is not compatible with the older VP1 stations.
This board should be paired with temp/hum sensor 7346.166 or 7346.174 (enhanced version). It is not recommended for use with the latest 7346.070 temp/hum sensor unless the correct temperature offset is carefully entered into the console.
For VP2 stations made from 2016 on (AS revision and later) see part 7345.952.
This 7345.978 part is supplied complete with wireless antenna and fitted to the white backplate. This is the only format in which the transmitter board is readily available.
Detailed installation instructions are shown in a video on the Davis website at:
This same transmitter board is also used in the 6322OV Anemometer Transmitter and in the 6372OV and 6382/6383OV Supplementary Temperature and Temperature/Humidity Stations and therefore may also be used as a replacement board for these transmitters.
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