First Alert BRK 9120LBL Hardwired Ionization Smoke Alarm with 10-Year Battery Backup

The First Alert 9120LBL Hardwired Interconnected 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 lithium 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.   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.   10-Year Lithium Battery Backup   The First Alert 9120LBL Hardwired Interconnected Smoke Alarm features a built-in 10-year lithium battery backup that provides continuous power for the life of the detector. An end-of-life timer lets you know when the device should be replaced.   Power Source: Hardwired Battery Backup: 10 Year Lithium Sensor: Ionization Interconnect: Can be linked with up to 18 units (12 Smoke, 6 CO/Heat/Relay) Smart Sensing Technology: Helps reduce nuisance alarms Noise Output: 85 dB in a T3 Pattern Single Button: One press to silence and test alarm Easy Installation: Perfect Mount System includes Gasketless Base Tamper Resistant: Includes Locking Pins Dust Cover: Keeps alarm clean during construction Improved UV Resistance: Keeps alarm from discoloring over time Standards: UL 217 Warranty: 10 Year Limited