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How do you properly shield a 10-year lithium battery smoke detector from an old wired system?

According to their website battery smoke detectors are not meant to be installed over junction boxes because it can cause nuisance alarms. Which makes marginally more sense, though still very little,...
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Nest Protect Expiration Date

The expiration of any CO detector is based on the DATE OF MANUFACTURE and is usually ten years from that date. It doesn't matter when the device is installed. That date is printed on the back of the ...
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Nest Protect Expiration Date

I waited a long time to install my 1st Gen Nest, probably at least a year. My manufacturer date was Nov 2013. It told me today, June 2022,that it is expired. Therefore, I would conclude that the ...
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Smoke Detector Turns on Randomly: After removing Popcorn ceiling and repainting

Most smoke detectors use a dual chamber where 1 chamber is sealed and another is open. They use a small radioactive device to create ionization of the chamber when there is smoke. Many of the ...
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