Review on π₯ High Accuracy Carbon Monoxide Detector and Battery Operated Smoke Detector β CO Alarm with Sound Warning, Digital LCD Display, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards by Kenny Shaver
Makes crackling noises -
I bought 4 of these and 2 started making crackling noises. The noise is not related to the signal, but to a strange defect that is annoying. Made in China so I'm concerned it will work properly in a real emergency based on the quality control reports of products made in factories in China. They look beautiful on the wall and are easy to install.
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