Comment on And now I'm reminded I have two of these to repair.

• rumba@lemmy.zip ⁨3⁩ ⁨hours⁩ ago

  They run off batteries, using either isotope decay or light sensor (or both)

  I actually have one hanging off my ceiling right now, it’s battery was fine, but it tripped likely due to dust or a spider on the optical sensor. It went off at 2am, network sent them all off, took me 10m to find the right one I wasn’t about to just blow it out and out put it back on the ceiling :)

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• SlartyBartFast@sh.itjust.works ⁨9⁩ ⁨hours⁩ ago

  If I could turn back time, if I could find a way

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  • FenrirIII@lemmy.world ⁨6⁩ ⁨hours⁩ ago

    I’d take back those words that have hurt you

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• Natanael@infosec.pub ⁨8⁩ ⁨hours⁩ ago

  Depends on model. Almost all older ones does (using radiation from the isotope to electrically charge smoke particles that pass through, which then can be detected by a sensor).

  Many newer ones are optical.

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  • SaveTheTuaHawk@lemmy.ca ⁨6⁩ ⁨hours⁩ ago

    The A-241 does not charge the particles, it ionizes the air in a small chamber that allows a steady current. Any smoke particles disrupt these currents to set off the alarm.

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• SaveTheTuaHawk@lemmy.ca ⁨6⁩ ⁨hours⁩ ago

  “Jerry, we have thousands of warheads full of plutonium”

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• MeThisGuy@feddit.nl ⁨6⁩ ⁨hours⁩ ago

  where there’s a will there’s a way

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