First Alert SM210, 10-Year Sealed Battery Smoke Alarm with Slim Profile Design, 1-Pack

It's a nice smoke alarm. And the light is also bright. And the smoke alarm is good for hallways and I recommend

Awesome smoke detector that is very easy to install!

This is the second First Alert 10 year battery sealed smoke detector I have purchased in the last three years. The first one was purchased at a hardware store and I assumed that perhaps it had been on the shelf a long time and that was why it stopped working after a year. So I bought one from Amazon thinking it would be newer, closer to the manufacturer date. I installed it on August 28, 2024. It failed on July 15, 2025. There was no fire, no smoke and nor heat indicating that it needed to go off . There’s no way for me to get inside it no battery replace, and it continues to chirp when I reinstall it, despite there being no smoke or heat nearby. My money was wasted. I’ve bought the old fashioned smoke detector and plan on changing the batteries when daylight savings time changes.

Good smoke alarm

I've had these smoke detectors in my home for about a year now, and two of them started to malfunction. They started alarming (NOT chirping), in the middle of the night. One of them alarmed a few times and stopped after I took it down. The other alarmed every couple of hours until I took it down. The following night, it started to alarm again, but it was constant. I tried to silence, reset, and clean the detector, nothing would turn it off so I eventually deactivated it before I went insane.I called First Alert's product support to let them know what was happening, and they are sending new units to my house. I am incredibly satisfied with their customer service, but wish I didn't have to deal with the malfunctioning alarms in the first place.

It definitely works well as a smoke detector. It was easy to install the base to the wall, as well as inserting the actual smoke detector onto the base. Our previous smoke detector was almost impossible to get back onto the base after silencing it and it was super annoying so we were really happy with this one. It’s definitely loud which is what you want to smoke detector. I also appreciated the sticker on the side that had space for you to write the date that you installed it, and the date that you should uninstall it.

No problem with mounting, activation, and button test. Will update review in 10 years or after fire, whichever comes first!

Had to replace my smoke detector, oh yeah the middle of the night beep beep that would wake the dead. Easy installation even with having to make a new hole for the base.