There may be hope! Good stuff first…story later. Hopefully someone can replicate this. I’ve been able to twice but with the same device.
- Remove battery if not already removed.
- (Tricky part) Push and hold reset button while inserting battery.
- LED should blink once if successful and 3 slow flashes when pushing reset button instead of 5 quick flashes (at least this was my experience) and scan in Home Assistant will acquire the sensor complete with a MAC address.
Let us all know your results if you try this please! Now for the story.
I’m here because, like most of you, I encountered a dead sensor though mine was after dropping it during installation. I just purchased a starter kit a week ago and was installing a door contact tonight when I dropped it which instantly triggered the 3 flashes every 10 seconds. After finding out that means low battery I discovered it was no longer reporting state in Home Assistant so searched some more and ended up here. Having been in networking for years i knew that MAC addresses are “burned in” and should still be there regardless of available power. I’ve also been working with a wide variety of electronics since I was a child and have encountered several little start up tricks (30/30/30 etc). It seemed to me that the sensor was stuck in a “state” or hung if you will so I thought I’d try depressing the reset button while powering up the sensor and it worked. I was hesitant to brick the sensor again in order to replicate the process but the decision was made for me as I think it’s got a [Mod Edit] battery connection. I hope it works for more than just me. Peace!
MOD NOTE: Post edited to conform to the Community Guidelines.