BRK Smoke Alarm 120 V 9120B12ST is a hardwired photoelectric smoke detector with battery backup, engineered for reliable fire detection in residential and commercial buildings. The 120-volt connection ensures continuous power, while the 9-volt battery backup provides operation during outages. The dustproof sensor and test/reset button simplify maintenance, and the mounting bracket allows quick, secure installation. Certified to UL217 standards, this alarm delivers peace of mind and code compliance.

Item Features

• Hardwired 120V power with 9V battery backup
• Photoelectric sensing technology for smoke detection
• Dustproof sensor and test/reset button for maintenance ease
• Mounting bracket for quick installation
• Undergoes UL217 certification and testing