xia@lemmy.ca to ShowerthoughtsEnglish · 5 days agoIf you reverse the polarity of a fire-alarm, you get a fire-starter.message-squaremessage-square17linkfedilinkarrow-up194arrow-down15
arrow-up189arrow-down1message-squareIf you reverse the polarity of a fire-alarm, you get a fire-starter.xia@lemmy.ca to ShowerthoughtsEnglish · 5 days agomessage-square17linkfedilink
Home smoke detector, yes. Fire alarm, no.