How old are they? At about 7 years they hit end of life and put out a different beep spacing to let you know they need to be replaced. I did all of mine over a period of a few months, replaced with 10 year sealed battery units.Yesterday, the hardwired smoke detectors kept going off for no particular reason other than to terrify the dogs. I had to go down to the electric panel to turn off the circuit to them but the batteries kept them going.
I found a can of compressed air and hit all three of them with and that blew got out some spider webby dust and they haven't gone off since.
Hardwired is just plain stupid since you STILL have to replace the batteries every 6 months or so. At 3 AM of course. Apparently the device tests the batteries until it kills them.
Where is the value in hardwiring them? Even the fact that they all go off together is stupid. Do I run out the door or dive out the window? You have no idea which one actually detected potential danger.
Not here! MHP all the way (to the broody hen if I have one). What can you do with a heat plate EXCEPT brood chicks and how often do you do that? The heating pad is also useful year round for people with aches and painsI do use a heat plate, not one of those weird heating pad things LOL!





