Hi all - I have 6 multipurpose sensors around the house, i use them primarily for temp sensors - basement, child’s room, fridge, basement garage door etc. I discovered last night that all but 2 are not working any more (they don’t check in), they still show 30-60% battery life. I didn’t receive any notice of a battery issue (they are supposed to last multiple years from what i recall). I purchased replacement Lithium CR2 batteries and replaced the first one, the battery became so hot i could barely get it back out (I was concerned it would explode or catch fire). I tried another battery - same thing happened. I tried another sensor and its doing it to. I havent bothered trying the others as i suspect they probably all have the same problem. Is this a known problem? How can these be marketed as security sensors and stop working and not be notified? I have $150-175 worth of sensors now that don’t work and zero trust in the system. I’ll reach out to support to see what they say. Seems like a pretty high failure rate - and a pretty bad way to fail.