Hard Wired Smoke Detector Beeping
Since yesterday my hard wired smoke detector has been beeping. Although it is a hard wired system, it still has a battery inside it in case of power failure - they are all like this. So the alarm was making a beeping noise, like a chirp.
I did go up the ladder to try to take the battery out - round the edge there's a little part round the edge of the detector which, when pressed in by about 1/8" enabled me to twist the whole unit and it came away in my hand, but then I saw the hard wiring in the ceiling and panicked a bit, so pushed the smoke detector casing back in place and twisted it shut again.
However, it's now beeping every 20 seconds. The reason for this is that when the battery gets low it is more inefficient, so chirps more regularly - and it is temperature sensitive. The temperature overnight dropped to -3° which is why it's decided to chirp more frequently. Later I will have to get up the ladder again and get the cover off and take the battery out, to find the right size, then go to the shops to buy a replacement.
I've got two hard wired detectors in the hallway, one downstairs and one upstairs. I had wondered which one it actually was yesterday - I'd assumed it was the downstairs one. This morning I now know as I can see the downstairs detector is flashing a red light just before it beeps - whereas the upstairs detector has a continuous green light (something you can only see in the dark), although the red light is noticeable in the half light of the hall.
The batteries last about 3-5 years on average.
So that's today's job! Buy a smoke detector alarm battery, get up the ladder and replace the old one!
Image Credit » http://pixabay.com/en/smoke-detector-fire-alarm-burning-315874/ by PublicDomainPictures