03-05-2012 01:59 PM
Hi Peferns and welcome to the Community. Glad you joined us. Let’s get that battery changed.
There are lots of smoke detectors/alarms. Some are battery operated only and some are
what is called hardwired with a battery backup. The type you most likely have is hardwired with a battery backup.
Some of the new types of smoke alarms have a compartment in the front that snaps or slides open to replace the battery.
Other models have to take the cover off and the battery snaps into a compartment located inside the body of the smoke alarm that is attached to the ceiling or wall.
If you need to take the entire unit off, for safety turn off the power to the circuit first. Next, unplug the wire plug or twist off the wires nuts.
To open some alarms you would turn the unit in the direction of the “off “arrow on the back, some just snap open.
Other types have a tamper resistant tab or pin. For disengaging the tabs, squeeze both tabs and rotate the cover in the direction of the “off” arrow. For the pin type use needle nose pliers and pull the pin out.
If you could provide the make and model number of your smoke alarm, I could give you more detailed instructions.
There are a few reasons your smoke alarm might be chirping. This could be something simple as a low or loose battery or the sensor is not working.
Some manufactures recommend you upgrade your smoke alarms every 5 to 7 years for safety and to take advantage of new technology.
Hope this helps.
I’m a Home Depot Store Associate, trained and authorized to help people on the Internet
03-08-2012 10:34 AM
Great information above. I only have one thing to add. If your smoke alarm is a hardwire only (These were pretty common 10years ago) then according the the instruction the chirping indicates the useful life of the alarm has ended and needs to be replaced. Thanks again for you question.