Kidde Smoke Detector, Hardwired with Battery Backup & Interconnect, Battery Included & Smoke Detector, Hardwired Smoke Alarm with Battery Backup & Interconnect Capability

• 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: Ionization sensing technology — detects invisible fire particles associated with flaming fires quickly and sounds an 85dB alarm Product 2: Hardwired smoke detector with battery backup — provides reliable detection, even during a power outage Product 2: Large base makes mounting easy, while a front battery pull tab lets you activate the smoke alarm without removing it from the mounting bracket Product 2: Whole-home interconnection — maximum of 24 Kidde devices of this type can be interconnected. when one alarm sounds, they all do