We have a 2007 Fleetwood revolution. It is plugged in all the time in a 3 sided building. ( front is open, the unit is back in) It makes a chirping noise. It looks like everything is normal when we go...
rgatijnet, I think you won the golden apple. I went out and looked that CO detector over, and, it does have a battery. I changed it, and no chirps since then. Thank you so much, and thank you to all who replied to my query. It is nice to be able to ask questions and get so many people who are willing to reply. You guys are the most! Thank You