The Kidde KN-COB-IC is an AC wire-in carbon monoxide alarm that warns you and your family of dangerous carbon monoxide levels. It includes multiple contractor friendly features to ensure easy installation and minimal troubleshooting. This alarm interconnects with up to 24 Kidde devices (of which 18 can be initiation) including smoke alarms, CO alarms and heat alarms on one wiring network. The KN-COB-IC includes a 9 V battery backup along with a 10 years limited warranty. 10 years Life: "If your CO alarm was manufactured prior to 2013, it does not have a 10 years life.
Kidde® AC Wire-In Carbon Monoxide Alarm, Hardwired Power Source, 120 VAC, 60 Hz Supply, Electrochemical Sensor, LED Visual Indicator Type, Alarm: Carbon Monoxide, 85 dB at 10 ft Sound Level, 40 to 100 deg F, 5-1/4 in Width, 1.8 in Depth