Wired Smoke Detector - Intermittent Beeping


Old 05-14-19, 04:25 PM
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Join Date: Sep 2006
Location: St. Louis
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Wired Smoke Detector - Intermittent Beeping

I have a 3 wired smoke detectors. The one that's the hardest to get to (atrium ceiling) goes through spells where it starts beeping like the battery needs to be changed. I've changed the 9 volt battery multiple times. The detector will be fine for a few weeks, and then start beeping again. Doing the "tongue test" on the 9 volt I remove from the detector tells me that there's probably plenty of juice still in the battery.

Any suggestions for identifying the cause, or just I just look at replacing ALL the detectors?

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Old 05-14-19, 05:02 PM
Join Date: Feb 2016
Location: United States, Virginia
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If the detectors are close to 10 years old they should be replaced. Also the tongue test is not accurate for determining if battery has the needed voltage.

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