| It will drive you crazy.
You need to note the time it chirps, then the next chirp. It will give you an idea of the frequency of the offending device(every 90 seconds?)then it will be easier to locate.
Move to different areas and hear chirp difference, turn head. Good Luck
Most smoke detectors can be turned, removed and unplugged to verify not chirping, safely.
If you are lucky It may be interconnected, so when one detector sounds, they all sound, try push on smoke detector where it says "Push to Test" maybe you can hear it more easily in Alarmed Condition. |