The First Alert 9120LBL Hardwired Smoke Alarm with 10-Year Battery Backup is designed to provide uninterrupted protection against smoke and potential fires, even during power failures. Utilizing advanced ionization technology, this hardwired smoke detector is engineered to detect smoke quickly and accurately, triggering a loud 85-decibel alarm to alert occupants. The device is equipped with a test/silence button for easy operation and a latching alarm indicator to identify the source of an alarm. Additionally, an end-of-life signal alerts homeowners when the unit needs to be replaced. For enhanced safety, it can be interconnected with up to 12 compatible First Alert or BRK smoke and carbon monoxide detectors (sold separately) within a single-family home.
Product Highlights
- Hardwired smoke alarm with 10-year battery backup for continuous monitoring and protection
- Ionization sensor and 85-decibel alarm provide rapid alerts to potential fires
- Interconnect up to 12 compatible devices for comprehensive home safety coverage
- Simplified operation with a single test/silence button and easy battery access
- Tamper-resistant and universal mounting brackets facilitate a secure and straightforward installation
- UL-certified and supported by a 10-year limited warranty






Reviews
There are no reviews yet.