Kidde 21033081 Hardwired Smoke Alarm with AA Battery Backup

Modern 5" hardwired smoke alarm with dual-power design—120V AC with 2 AA replaceable backup batteries included for continuous protection during outages. Advanced sensing technology minimizes false alarms from cooking while fast alerts give your family critical time to escape safely. Features interconnected alarm activation so all units trigger together, self-testing capability, and simple twist-and-click installation. Multi-color LED warnings keep you informed at a glance. End-of-life notifications remind you after 10 years when replacement is due. Comprehensively tested to the latest UL safety standards for reliable, dependable protection.