every couple of months, seemingly random groups of 2, 3 or more of these sensors become inactive at the same time (within a minute or two of each other).
I go around the house and re-Add them. They will work for a few hours and become inactive again within a minute or two of each other.
After serval “re-Addings” they eventually stick for a few weeks but then it starts all over again.
My thought is to look at some logs but, I’m not sure which logs to look at and what I’m looking for.