How do smoke detectors keep dust and insects out while simultaneously allowing smoke to diffuse through them?
In: 5
If there’s enough dust or lingering bugs, it will set off the alarm.
They don’t go off as soon as there’s an interruption, it takes a little bit of time, which makes sure that the occasional bit of dust or passing insect doesn’t set them off. It’s basically a little timer to make sure that the alarm doesn’t go off all the time, just a couple of seconds of delay stop them from being constantly obnoxious.
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