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what invisible thing could set off my smoke detector? (lemm.ee)

submitted 4 months ago* (last edited 4 months ago) by [email protected] to c/[email protected]

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(I have carbon monoxide detectors that are not going off)

I have smoke detectors that are incorporated into my home alarm system. The other day, the one by my front door went off for no apparent reason, twice, and when I changed the batteries, it started alarming again immediately.

there was absolutely no reason for it, there were no open windows or doors nearby, it just went off. so, my alarm company replaced it. installed the new smoke detector yesterday and... it just went off again. completely different smoke detector.

there's absolutely nothing in my house that could produce carbon monoxide, but I have separate CO detectors anyway that aren't going off. there's no smell, there's nothing visible, and these are those ~~electro optical~~ photoelectric style ones.

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[–] otherbarry 2 points 4 months ago* (last edited 4 months ago)

It's the same here in New Jersey, or at least the city I'm in. Recently a fire inspector came by the condo building I was living in & failed ~ 60% of the units because they still had the old style replaceable battery smoke detectors. Apparently going forward we are/were supposed to be using sealed battery smoke detectors & replace them entirely every ~10 years when they stop working.

EDIT: Not sure if that's OP's problem unless their alarm company is so cheap that they keep giving OP really old detectors to replace with.