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

Works Well, But a Bit Too Sensitive
This alarm definitely does its job — maybe a little too well! It’s very sensitive, going off even with a small amount of smoke from regular kitchen cooking. On the plus side, the 10-year sealed battery and slim design are great features, and it’s easy to install. If you’re placing it near a kitchen, just be prepared for a few extra alarms. Otherwise, it’s a reliable and high-quality smoke detector for home safety.

Easy installation and slim profile
2/21/18 Update – I purchased two of these detectors for bedrooms. The rest of our home has AC powered alarms. Twelve days past the return window, one detector started acting goofy and going off frequently for no reason. The alarm was in a bedroom, so it was obviously the worst possible spot for that issue. I had to take it down in the middle of the night just so my teenage daughter could get some sleep for school. I’ll contact the manufacturer for assistance but if you’re considering purchasing this alarm, heed the large number of low rating reviews that are based on the new number of unacceptable false alarms. I’m now regretting I didn’t do so. Like most people, I tend to think “oh, that probably won’t happen to me”. Well, it did. Now I have to either order a new type of detector or try to get the faulty one replaced through the manufacturer’s warranty. Being forced to replace an item purchased only 42 days ago is very annoying. I’ll probably just toss it and buy a Kidde. I have a sealed 10-year battery model Kidde in my bedroom similar to this First Alert and the Kidde has been rock-solid for well over a year with zero false alarms.Original review followsI purchased two of these for rooms without AC wired detectors. Both installed very easily and functioned fine when tested. The slim profile helps keep them from sticking out or distracting from the appearance of the room. The alarm is loud but not as loud as our wired detectors or even some other battery operated detectors I’ve tried. It has a test button but no hush button. It is definitely loud enough to wake and alert if activated. I like the sealed 10-year battery and the fact that it doesn’t require frequent changing like battery operated detectors. However, I make sure to test it frequently and not take for granted it will automatically last ten years.

Alarm malfunctioned after a year, First Alert is sending replacements
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.

looks good
as advertised

Well made and sturdy. Like the instructions on outer cover for use. Tested and works. Would recommend. Best one for a senior; don’t have to be changing batteries all the time.

Item arrived in shrink-wrap instead of the factory clamshell, I contacted the MFG who advised that these are not sold in shrink-wrap, even when purchased in bulk. I would not trust my safety or life with something like this. Be cautious.

Very happy with 10 year product.