My house was installed with both of Smoke alarm (most houses have and with a battery) and Smoke detector (2 Wire and without battery). The Smoke detector keep beeping recently. The problem is why the back (can't see inside) of the wire keep beeping after taking off the smoke detector? How to stop it?
You need to replace it. It will not silence as it detects Faulty sensor. Or you can turn off the breaker that controls that circuit and remove the base from the mount and replace both of the with 2 new ones with the same date code on package. My home and life far outweigh the few dollars that the detectors cost
SOURCE: My first alert smoke detector went off at midnight
Change brand new battery,every three months.Take some rubbing achahol clean the test button metal contact inside the detector.Well works correctly after these steps.
SOURCE: My SS785 smoke detector "chirps"
The unit may simply need cleaning. As dust and lint will accumulate on the unit and in the senors.
You can accomplish this with a can of compressed air with a straw nozzle (like you clean your computer with). Carefully remove the cover and blow out all the nooks and crannies of the detector. If you can't remove the cover, stick the straw nozzle into any opening you can see and give it a quick blast of air.
The detector may alarm due to the COLD air from the can. But, should stop once it warms back up.
You should clean all the detectors in the house at least every 6 months.
I find it unusual, that there is no battery backup in your detector. What happens if you have a fire during a power outage?
SOURCE: what cause smoke alarm to make a noise when there is no smoke?
There may be possible smoke that triggered your alarm or the battery needs to be replaced. Outdated alarms lose sensitivity and may not work properly after several years of service, so it is suggested you regularly replace the smoke detector.
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How to Care for Your Smoke Alarm
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