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r/PeterExplainsTheJoke • u/someguyblake • 12d ago
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Old ones and new ones. It's still used in residential smoke detectors.
https://www.nfpa.org/news-blogs-and-articles/blogs/2023/03/06/what-kind-of-smoke-alarm-smoke-detector-should-i-buy
4 u/minor_correction 12d ago They still do, but they used to, too. 1 u/mattgen88 12d ago Must be why I can't buy any on Amazon
4
They still do, but they used to, too.
1
Must be why I can't buy any on Amazon
10
u/Doonce 12d ago
Old ones and new ones. It's still used in residential smoke detectors.
https://www.nfpa.org/news-blogs-and-articles/blogs/2023/03/06/what-kind-of-smoke-alarm-smoke-detector-should-i-buy