Fibaro Smoke Detector (FIB_FGSS-001) - UI7

Following up on this Fibaro Smoke detector in UI7.

Had them running in UI5 for long time with succes (although it never beeped for whatever reason and never had smoke).

Now in UI7 I have this random “beep series”. Not 1 beep as with UI5 was the case, but longer beeping series, sometimes 5, 6, 11 or 12 times.

Vera UI7 Gives me:
event N/A Success The device #106 “Sensor” in “Keuken” was tampered with at 2015-08-20 08:00:18. Reported by serial #45101935.

But there was no tampering at all.

I have configured attachement.

Anyone has this issue? I have it with all 3 detectors randomly.