Our smoke alarm occasionally beeps but is hard-wired into the ceiling. Does it have a back-up battery inside?
Marilyn B asked:
We can’t seem to find the battery–if any. Does the plastic casing come apart to reveal the battery? The beeping started when the power throughout the house was off yesterday for an hour.
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We can’t seem to find the battery–if any. Does the plastic casing come apart to reveal the battery? The beeping started when the power throughout the house was off yesterday for an hour.
January 30th, 2009 at 11:20 am
There should be a battery back up for it and the sencor may be dirty
February 2nd, 2009 at 10:43 am
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.
February 3rd, 2009 at 2:36 pm
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
February 5th, 2009 at 11:42 pm
yes it’s the backup pack, and it’s gone dead, so open it up and change it,
February 7th, 2009 at 4:26 pm
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.
February 8th, 2009 at 4:24 pm
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).
February 9th, 2009 at 2:11 am
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.
February 11th, 2009 at 11:51 pm
Push up and turn the sucker counter clock wise, It will come off seiling, 9 Volt Battery will be under lid, replace it
February 14th, 2009 at 9:10 am
the sensor is dirty with dust. if it’s hard-wired, you have no battery.