My mobile home has a smoke detector in each hallway. They operate on electrical current rather than battery.
From time to time over the years the one in the back hall, near rooms I seldom use, sounds off.
Like today. I cannot smell smoke, or find anything amiss anywhere.
I've, in the past, put a towel over the detector to silence it. (The things can be sensitive to humidity). It kept right on blaring just now, so I had to throw a breaker and shut the current off to three rooms.
What would you do?
In past years I've called out the fire dept. and they couldn't find anything, except for once a bad wiring job done by a contractor. No one's touched the wiring here since, other than change over some ceiling fixtures a year ago.
Do those things go off if wires in the walls are shorting out? In those cases wouldn't the short kick off the breaker?