I have had two motion sensors, the small ones, for about5 months. For some reason, one of them does not sense any more. The red light does not light when there is motion. Is this a battery issue or did it break? My other one seems to be OK.
If it’s not blinking at all, that sounds like a battery. Since you have another one, you could swap the batteries to find out for sure.
First, I would remove the battery, then re-insert it. Check the device info in the app.
I had a switch replaced by Wyze because it said the battery was dead after a few weeks. I still use it for battery test. On Jan5, the app said it was low, replace. I removed the battery, measured voltage at 2.92v. Good. Put it back and it was fine. Today, Jan 7, same thing.
The sense switch is erroneously reporting a low battery. If you experience the same issue, open a ticket. I’m sure Wyze will replace it.