First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide Detector with 10 Year Sealed Battery Backup for Maximum Safety

Sam & Mike: Product is well made, very easy to install

United States on Oct 18, 2023

FL Craft Beer DudeFL Craft Beer Dude: Second purchase of this hardwired Lithium battery carbon monoxide / smoke detector. My first one costed more. Easy installation hardwired keeps Li-ion battery charged but for how many days following a hurricane? Weardated 10 years programmed to self detonate. Green LED lights when A. C. power is applied.

United States on Sep 07, 2023

Tootybug: I hired a handyman to install, thinking it had to be wired... Wrong! I just paid a lot for 15 minutes of installation. They are just unplug, and plug the new one in. So Easy! I could have done it myself. It is just like my old one, but does have Carbon Monoxide and the 10 year enclosed battery. I'll let you know if it fails, but looks good.

United States on Sep 02, 2023

Jeff in Seattle: When I moved into my house, there were three contractor grade alarms with one just being battery powered, and two interconnected. However, the two AC models did not have battery backup?!?!? The other seemed like an afterthought or they were forced to put one in to get it passed inspection. The house was built in 1991, but even then, that was inadequate. The first owner added 4 battery powered smoke alarms to the bedrooms. This menagerie of alarms and functionality was poor at best and key places in the house had no alarms.

In 1998 when I moved in, I began rewiring the house due to very poor electrical layout. I decided to upgrade the alarms at the same time. I had a media circuit which I ran an alarm branch that began on the 2nd floor, then to the first floor and then to the basement floor. I wanted alarms that were AC, had a battery backup, and all of them interconnected together. BRK brand (at that time) was the only company that had smoke, co, combo smoke/co and heat alarms that would all work together. I installed the max that could be installed and interconnected on one zone: by code 12 smoke max, and 18 alarms max. I had most normal rooms with a smoke detector,...

United States on Aug 03, 2023

Localshopper: I was looking for a replacement smoke/CO detector since my old detector had to be replaced after 8 years (which I thought should be 10 years). The old detector started chirping because of low battery. However when I replaced the battery, it was still chirping, but this time it was 5 beeps every minute. Looking at the back of the detector I saw the manufacturing date of 2014 but I also noticed the warning that 5 beeps means it needs to be replaced.

The old detector is a First Alert combo with a 9v battery backup. The battery itself needs to be replaced every 6 months, which is really a hassle as well as it costs $8 for a pack of 2. Thus I wanted to find a new combo detector with a 10-year lithium battery. This is probably the best option since the battery lasts as long as the detector itself. The whole unit can be replaced every 10 years. This also saves a lot on the battery replacement itself. Plus the unit is just $10 more than the one with the 6-month battery backup.

Installation was very easy since this unit has the same size as the old one, so I just use the old bracket since it fits perfectly. Also the old wire connector plugged in perfectly into the slot in the...

United States on Mar 22, 2022