It reports temperature and rain in the following message:
Packettype = TEMP_HUM
subtype = TH14 - Alecto WS3500,WS4500
Sequence nbr = 20
ID = 8601 decimal:34305
Temperature = 16,9 ?C
Humidity = 23
Status = Dry
Signal level = 5 -80dBm
Battery = OK
Each time the swing tilts, the humidity value increases by one % until it reaches 165%, after that the next step is 1%. Each percent represents 0,45mm rain
Unfortunately your rain/temperature sensor is being seen as a temperature/humidity sensor. I think the RFXtrx transceiver firmware would have to be updated to be able to distinguish between two different TFA devices.
Your sensor appears to operate like a LaCrosse TX5 rain sensor. The message it transmits includes a count that is incremented each time the thing tilts. But that count is only 4 bits wide - thus the count from 0 to 15 (1 to 16). Or it could be that the humidity and humidity status are actually two bytes of the rain count. If that’s true then the LaCrosse protocol should work.
If the LaCrosse protocol doesn’t work you might try Hideki if you haven’t already. The user guide suggests that for what is probably an earlier TFA rain sensor. If that doesn’t work then the transceiver probably isn’t capable of decoding signals from that device.
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