Review on 🔥 SA521CN-3ST Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup - FIRST ALERT by Richard Summerall

This is just terrible. They look pretty good and have a good mounting ring. This is an exhaustive list of positive qualities. My electrician had trouble pairing and had to spend extra time on it. Of course, this time is not free, so not very good. He really pulled it off and got them all working together and I really wish he hadn't. And here's why: These things are too loud. They are actually painful when anxious. Given that modern codes force you to place them throughout the home, this is entirely unnecessary. I went with the minimum install which requires 7. This means that whenever one of them goes off, I have 7 deafening sirens. Now you might be thinking that, considering the fire and all, that might be a good thing. But you are wrong, because there is no fire. So far, each of them has mistakenly triggered and powered the entire system. This of course happens at night after our baby has gone to bed. It's not when we're cooking, taking a steam shower, grinding cement, or misting the dance floor. That's when we lie in bed, watch TV, sleep. and there is absolutely nothing to call them. They are new, clean, in a new house, with the windows closed, at a temperature of 73 degrees and a humidity of 50%. To be honest I absolutely hate her. Actually I removed them all and currently have another model installed while looking for a new solution. They ruined our sleep, taught my little girl that fire alarms don't really mean there's a fire and she's just scared of them and the spot on the ceiling where they're mounted. complain and ask for a solution but I very much doubt they will take care of me because I am not interested in replacing units. My recommendation to you is to buy literally every other product.