Kidde Hardwire Carbon Monoxide Alarm with Digital Display and Peak Level Memory 5.75 Diameter x 1.8 Depth & Smoke Detector, Hardwired with Battery Backup & Interconnect, Battery Included

• Product 1: Test/Reset - Tests CO alarm circuit operation and allows you to immediately silence the alarm. Temperature Range-40˚F (4.4˚C) to 100˚F (37.8˚C) Product 1: Digital Display - Displays the level of carbon monoxide the unit is sensing. The unit updates this reading every 15 seconds Product 1: Protects during a power failure - combo smoke and CO detector operates on a 120V power source with 9V front-loading battery backup Product 1: Adjustable Mounting Bracket - Allows for fast installation and perfect alignment Product 2: One button design allows you to test the smoke detector or temporarily silence a nuisance alarm with the Hush feature Product 2: Smoke alarm still works during a power failure – unit operates on a 120V power source with 9V battery backup (battery included) Product 2: Easy installation – smoke detector includes a quick connect power harness Product 2: Interconnectable with other hardwired alarms, providing whole-home alarm activation – when one detects smoke, they all sound, alerting everyone in the house