USI Electric Smoke, Fire And Carbon Monoxide Alarm, Hardwired, AA Battery Backup
Sensing plus multi-criteria detection accurately identifies both slow-burning and fast-flaming fires
2-replaceable AA backup batteries - ensures continuous protection even during power outages
Interconnected alarms - for optimal safety, once 1-alarm sounds, every compatible device will sound
Superior false alarm resistance- reduces nuisance alarms, minimizing disruptions
A low battery chirp alerts when battery needs replacing
Easy Installation- Simple setup for hassle-free installation
Meets the requirements of leading safety organizations: underwriters laboratories (UL) 217 9th edition and ul 2034 4th edition, federal housing authority (FHA), housing and urban development (HUD), and the national fire protection association (NFPA)