3 ms·
End-of-life and/or battery warning for smoke detectors is a solved problem at least amongst established manufacturers serving the European market. Once this mod
by taffronaut 5y ago
End-of-life and/or battery warning for smoke detectors is a solved problem at least amongst established manufacturers serving the European market. Once this mode is triggered the detectors emit a mildly irritating chirp every 30 seconds or so.