Aqara Contact Sensor Dieing (lumi.sensor_magnet.aq2) | Home Assistant | Page 1

patent kiln Dec 3, 2025, 8:17 PM

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Has anyone experienced these sensors just dieing randomly? I have checked the battery with a multimeter and it's still reading 3V so it's not the battery. It doesn't respond to the button press or the button press-hold at all. This is the second sensor in this location of the house to die in a year. I suspect it's because it's on a door that catches afternoon sun and the internal temperature sensors would often get up to 50c+, but other sensors in hot locations like the garage haven't died yet.

If anyone has experienced this? Is there any way to recover them at all?

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patent kiln Dec 3, 2025, 9:05 PM

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Aqara Contact Sensor Dieing (lumi.sensor_magnet.aq2)

worthy delta Dec 4, 2025, 6:13 PM

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(Anecdotal) I had one just straight up die on me too. Maybe a year or two old, in a climate controlled room, no direct sunlight. No response to confirmed good batteries, or trying to press the reset button. Just dead. Only happened once (so far).

lofty rivet Dec 4, 2025, 8:53 PM

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I have a few of them and they sometimes stop communcation with Home Assistant but I can re-pair them and they will work again for some time.
In my case it seems, the connection is lost when there is no state change over a longer period.

patent kiln Dec 4, 2025, 9:07 PM

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lofty rivet I have a few of them and they sometimes stop communcation with Home Assistant bu...

Thanks, but that's not at all what I'm describing. Here, it seems like something has completely died in it to the point where the LED doesn't even flash/respond when plugging in a new battery/holding reset.

#Aqara Contact Sensor Dieing (lumi.sensor_magnet.aq2)