Bests & Worsts Reviews from Amazon

I believe this brand is the top of the line when it comes to fire alarm smoke detectors. I like the fact that it is both a smoke detector and carbon monoxide detector. No complaints some bigger hardware stores stopped selling this brand and moved to off brands so I am glad Amazon had this 08/12/17 update I have had this for a little over a month now and the fire alarm started to sound non stop. I tried to clean it and replace the batteries with no luck. Unfortunately i can't find a way to return it on Amazon.