|reply to nunya |
Re: How often to change smoke detector batteries
said by nunya:I'm in the same boat. We have three wired units, About 5 years ago replaced them with combo wired battery backup units and added a CO sensor.
I've found that since I switched to wired, the batteries last for several years.
I try to follow the "Fall Back" battery change rule but don't always remember. Have not had them beep due to low battery.