Does Taking The Battery Out Of A Smoke Detector. While they are centrally wired for power and use a battery for backup I eventually gave up on the 9V source as I couldnt resolve the issue. Once you remove the cover of the detector its easy to see how to change a smoke alarm battery.
Installing the new batteries incorrectly or using the wrong type will cause your smoke detector to not function. An alarm will sound for a short time then the alarm will silence. Take the smoke detector off its mounting bracket on the ceiling and disconnect the power cable plugged to the smoke detector.
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If its locked you may need to remove the tamper-resistant locking pin. Other smoke detectors get hardwired meaning they tap into and draw their power from the home or buildings electricity. Remove and replace the battery from the smoke detector. Some models may only require 1 battery.
