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The First Alert 9120LBL Hardwired Inter-Connected Smoke Alarm with Lithium Battery-Backup is a great choice when it comes to affordable smoke alarms. In the event of a power outage, this smoke alarm is equipped with a 10 year sealed battery back-up.
Ionization Sensor Reliably Detects Flaming Fires
The First Alert 9120LBL Hardwired Smoke Alarm with Battery Backup comes equipped with an ultra-reliable ionization sensor to provide the earliest possible warning of a fast-flaming fire. The sensor is optimized to detect flaming fires, such as those caused by paper, kitchen grease, and other fast-combusting materials. This smoke alarm also implements Smart Technology to drastically reduce the number of nuisance alarms triggered.
Gasket-less for Easy Installation
To facilitate hassle-free installation, this smoke alarm features a perfect mount system that includes a base and a mounting bracket. This keeps the alarm secure over a wide rotation range that allows for true alignment.
Sealed Battery Backup for Detection During a Power Outage
This smoke alarm is designed for hardwired installation, but it also features a ten year sealed battery backup that helps ensure continued functionality in the event of a power outage. The unit comes with a 9-volt battery and features a pivoting, easy-to-access battery drawer that allows you to replace the battery without dismounting the alarm.
Latching Alarm Indication
In addition to functioning independently, this smoke alarm can also integrate with up to 12 other First Alert or BRK hardwired alarms for coverage of larger spaces. It also integrates with up to six other compatible devices, such as bells, horns, and repeaters. If one alarm in the series is triggered, they will all sound. The alarm features a latching indicator to identify which unit triggered the alarm, alerting you to the area of danger.
First Alert BRK Brands Hardwired Ionization Smoke Alarm 9120LBL
Average Rating Based on 34 reviews: (5)
Saved me $100s - 02/15/2019
Reviewer: Edward Town
The six hard wired 9120s in my condo failed. No surprise, they were 5 yrs old. An electrician said he'd replace them with 10 yr battery models for $450. Then I found these they used the same wiring connectors and I installed all 6 in less than a half hour. I saved over $300. I like my electrician but not that much. Thanks First Alert.
Saving Lives - 02/05/2019
Reviewer: Linda Mabry
Easy to install, meets new law requirements.
Smoke Alarm - 01/04/2019
Reviewer: Christine Sisk
Product was shipped quickly and very easy to install
10-YR Lithium Battery Smoke Alarms - 10/09/2018
Reviewer: BARRON M FREEBURGER
These 10-year Lithium Battery Smoke Alarms are great replacements for the 9-volt battery units. They are easy to install and no more low battery chirping.
Easy Upgrade - 07/07/2018
Reviewer: James Frost
I have a newer house, which the builder equipped with the 9v power backup version of these alarms. I hated changing all those batteries every six months. And if I forgot to do it and one started chirping at 2AM from a low battery, I had to figure out which one it was, which isn't always easy. When those older detectors finally reached the end of their lives, I decided to spend a little more on the hardwired version that also comes with a 10 year battery. So glad I did. These were plug and play compatible with the 10 year old BRK/First Alert wires and even the mounting brackets are still the same. It was literally remove/unplug the old one, plug in the new one, twist it into place and pull the plastic tab that kicks on the backup battery. I replaced all 10 detectors in less than an hour. And no more battery changes or 2AM beeping.
Reviewer: Joe Pearce
Installed and all are working well
Reviewer: John Gagliardi
Exactly what I ordered, works great
Smoke alarm - 04/16/2018
Reviewer: nick berning
Very easy to put up uses same wire harness that was installed in 2001 10 year sealer battery.
Reviewer: Mallory Lynch
prompt and excellent service.
Reviewer: Mary Brabham
These replaced ten-year old detectors and snapped into place perfectly. Easy install
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