In some cases, FX-WMBUS-C-TH activation shall be done in different way than mentioned in manual
FX-WMBUS-C-TH sensor's normal activation procedure:
1. Place a permanent magnet at the sticker area (sensor's bottom side).
2. A red LED will turn on - Keep holding the magnet.
3. When the LED turns off - Remove the magnet.
4. The LED will flash for 10 seconds to indicate successful startup.
In some cases (depends on sensor's firmware), it has been noticed that after normal activation sensors went to "deep sleep" mode and not sending the messages.
Alternative activation method is a fixing solution in such cases:
1. Place a permanent magnet at the sticker area (sensor's bottom side).
2. A red LED will turn on - Keep holding the magnet.
3. When the LED turns off - Remove the magnet IMMEDIATELY before the LED starts flashing / be active.
4. If LED starts again, wait until it goes off and repeat steps 1-3.