Comments on: Our smoke alarm occasionally beeps but is hard-wired into the ceiling. Does it have a back-up battery inside?

By: mel

mel — Sat, 14 Feb 2009 14:10:29 +0000

the sensor is dirty with dust. if it’s hard-wired, you have no battery.

By: Ridgerunner

Ridgerunner — Thu, 12 Feb 2009 04:51:33 +0000

Push up and turn the sucker counter clock wise, It will come off seiling, 9 Volt Battery will be under lid, replace it

By: Terry Z

Terry Z — Mon, 09 Feb 2009 07:11:03 +0000

Mine does the same thing about once a year. What I have to do is call the alarm company and have something they have in their office reset to stop the beeping.

By: H_A_V_0_C

H_A_V_0_C — Sun, 08 Feb 2009 21:24:50 +0000

Yes, it has a battery. Newer model smoke detectors are required to be connected to the house 120V power, with a battery as backup in case of power failure.

When the battery is beginning to die, the detector senses this and emits a intermittent chirp.

Usually, you rotate the body of the detector to remove it from the mounting bracket, and you will find the battery on the back of the detector. You may have to disconnect and reconnect the 120V power connection to get the new battery in.

If you get the make and model # of the detector, usually you can find manuals online on the manufacturer’s website.

You’ll hear reminders (radio/TV/newspapers) to change all the batteries in all the detectors in your house when daylight savings begins and ends. (Change every 6 months).

By: propreno

propreno — Sat, 07 Feb 2009 21:26:24 +0000

It most likely has a 9 volt somewhere inside. There’s usually a little trap door either on top or side of unit. It will “chirp” every minute or so when the battery is low. Just open the cover, loosen the screws, and twist it off, unplugging the wires on the backside. If there’s no plug, shut the breaker off before disconnecting wires. Smoke detectors should be changed every 10 years or so.

By: curlyhurlymo

curlyhurlymo — Fri, 06 Feb 2009 04:42:22 +0000

yes it’s the backup pack, and it’s gone dead, so open it up and change it,

By: vannilla26

vannilla26 — Tue, 03 Feb 2009 19:36:55 +0000

ours beeps when the power goes off, to make you aware that the power is off, in case you didn’t notice or something, then beeps when the power goes back on

By: bilko_ca

bilko_ca — Mon, 02 Feb 2009 15:43:46 +0000

if it’s hard wired, then there is a central monitoring control pad and something needs to be reset. call your alarm company and they can probably give you a command that will clear it.

By: railway

railway — Fri, 30 Jan 2009 16:20:18 +0000

There should be a battery back up for it and the sencor may be dirty