Kidde Smoke Detector, Hardwired with Battery Backup & Interconnect, Battery Included & Smoke & Carbon Monoxide Detector, Battery Powered, Combination Smoke & CO Alarm, Voice Alert

• Product 1: One button design allows you to test the smoke detector or temporarily silence a nuisance alarm with the Hush feature Product 1: Smoke alarm still works during a power failure – unit operates on a 120V power source with 9V battery backup (battery included) Product 1: Easy installation – smoke detector includes a quick connect power harness Product 1: Interconnectable with other hardwired alarms, providing whole-home alarm activation – when one detects smoke, they all sound, alerting everyone in the house Product 2: Fire and CO detector in 1 unit with alert modes, LED lights, and voice alarm, that states, "Fire. Fire.", "Warning. Carbon Monoxide.", or "Low Battery." Product 2: Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire Product 2: Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries Product 2: Test-Hush Feature - silences the unit for approximately 8 minutes. tamper-resistant technology deters removal of the unit from the wall or ceiling