Rated 3 out of 5 by 2
Rated 4 out of 5 by fieldServiceEngineer Kidde Combination Smoke and Carbon Monoxide Alarm
Good unit but life is 7 years from first turn on. It will automatically begin to chirp every 30 seconds till power removed or unit replaced.
Rated 2 out of 5 by musicjon overly sensitive detector
I bought this smoke detector about 2 years ago and it is already malfunctioning. It goes off whenever there is any heat or smoke when cooking. It will only shut off if I remove it from the ceiling, and then sometimes when I put it back, it goes right back to sounding off way after I have finished cooking. I was cleaning the bathroom once with lysol and the alarm went off. It is way too sensitive and difficult to shut off. I will never buy this product again.