First Alert SC9120B Direct Wire Combination Smoke and Carbon Monoxide Detector, 120 Volt 9 Volt Battery Back-up - 3 Pack

My home has 11 of these combo smoke/carbon monoxide detectors hard wired throughout our home. They were installed when the home was built (2014) and reaching end of life. These a exact replacements and overall the quality is good. These newer units have 10 yr life so hope to get longer life but we'll see.

Purchased in March. Defective in May. Past the 30 return policy. Saw manufacture date is Oct 9 2014. These expire 7 to 10 years from manufacture date. Selling outdated merchandise.

Liked the three pack, had two units go out in same week, and the three pack price worked well, saving a few dollars. Every dollar saved helps with what the joe-bama/commie MALADY administration is doing to our country and we the people.

Not much to say, but I was pleasantly surprised these came with batteries included. Quick replacement of my old ones that were 7.5 years old and started chirping they were done.

Currently (Jan 2022) the also-hardwired also-easy-battery-change Kidde 37520299 is much better for $2 more... Because... (a) The Kidde smoke detector claims 10 years vs 7 years life and (b) The Kidde smoke detector is photoelectric. Ionization detectors are no longer legal in my state--must get be a reason. Many online statements deceptively say it's best to have both ionizaation and photoelectric. Sure but what they don't say is that if you need to choose then photoelectric is better... And... Photoelectric smoke detectors CO detector is far better than dual-method smoke detection... And... It might be best to get separate CO detctors... But... the cheapest photoelectric-only detector is currently about $20... So why not pay $30 and get photoelectric CO?... And... If you want dual smoke detection then you can get ionization detectors separately for another $11 in 4-paks or 6-paks. https://www.walmart.com/ip/Kidde-Hard-Wired-w-Battery-Back-up-Photoelectric-Smoke-and-Carbon-Monoxide-Detector/37520299

I purchased 8 First Alert hard wired smoke/carbon monoxide alarms expecting these ones will come with the various adapters as the one I purchased from Lowe's had. I installed that one because it had the right adapter and no rework g needed to be done. But now I have to hire an electrician to install the other 8 I purchased from your company because they came with just one attachment that doesn't fit the existing set up from the Firex 2006 smoke detector.

Fast delivery, product as described

I like this model and easy to install.

Very easy to install. One day delivery. Project done in 2 days.

These were replacements for the same style that was worn out. So easy to pop in. Didn't need to replace the included housing. I like that the battery is also included.