Bests & Worsts Reviews from Amazon

Well, they did their jobs...I had a fire in our fireplace that was almost out, down to the coals, so I closed the damper and went to bed. An hour later "BEEEBEEEBEEEBEEEP." I looked at the alarm, and the CO LED was flashing. Oops, I guess the coals weren't as dead as I thought. It woke me up and the wife. I've also had it alert to smoke from me accidentally letting a damper close while there was a full-on fire and smoke began to fill the room. Again...oops. I am glad to know they work, and, while I've been aware of the sources of my troubles so far, I am confident these will alert me if there is some real trouble happening.