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Received by Bernd Sitzmann (customer, Energiezukunft Schweiz):
„I just install your devices at a solar water heaters. In this way we found already 3 from 6 SWH are not working even plumper get paid for yearly maintemance. One heats even the roof during night.
The (roof heating) SWH are financial supported by the City.
So LoRa temperature devices are very helpful to detect problems at SWH.
Just for your information.“
Ultrasonic distance sensor
Magnetic contact door sensor