I don't have an alarm company...just smoke detectors wired into the home electric. It's the port that plugs into the smoke detector. I don't understand because I'm not aware that the port has anything in it that allows it to chirp.
I've contacted the maker of the smoke detector and my son-in-law is a Fire chief, so I think we'll probably be able to figure it out, but the chirping is unnerving.
