Domoticz

Ever replaced battery on a FIBARO FGK101 Door Opening Sensor? Then maybe you also found out that it factory reset itself if you have moved magnet away from the sensor body and the rear tamper switch is closed while inserting the new battery. That's very annoying, almost frustrating.

This is obviously not a Domoticz problem. I write it here as a reminder for myself next time. It might have happened to someone else too.

Look into the manual.
What you have encountered is probably the reset procedure of the sensor.

When you just replace the battery with the magnet intact it will just be fine.

Just tested it to do a reboot of the sensor, because it was not sending temperature anymore. That worked without issues.