Hi all, I have a zb network with several bulbs and some sonoff PIR sensors.
I don’t understand why but some times (in a totally random way) group of lights turns on as someone moved in the room even if it empty.
How can I understand what was the triggering event? A HA problem or something else? 
Logbook (depending on what you’ve excluded) will tell you what happened immediately before the light switched on.
The logbook says just that the PIR triggered the lights but I would like to exclude the ghost 
Check the motion sensor’s log. If it is triggering when no one is actually present then it is either defective, fooled by moving curtains, or pets, or rising warm-air, or other false triggers. If it has a sensitivity adjustment, decrease it, or partially cover the detector to narrow its field of view. If none of that is possible, or fails to correct the issue, you will need to replace it.
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