Poster said they go off in the middle of the night, twice a year, with no smoke. I have lived in dwellings with smoke alarms for over forty years and this has n

Poster said they go off in the middle of the night, twice a year, with no smoke. I have lived in dwellings with smoke alarms for over forty years and this has never happened. My current house has seven smoke alarms and we’ve been here seven years and this has never happened.