Kidde Carbon Monoxide Detector with Long Life Lithium Battery, 3 LEDs, Alarm Memory, Test/Reset Button

Small, effective, and easy to use, the Kidde CO alarm has three LEDs: Green for normal operation, Red for alarm, Amber for error or low battery Still works during a power failure - CO detector operates on a long-life, sealed lithium battery Easy installation with no battery fuss - carbon monoxide alarm will automatically activate when attached to the mounting bracket End-of-life chirp lets you know when it's time to replace your CO detector UL Certified, 10-year limited warranty, Weight: 0.5 Pounds, Manufacturer: Kidde Safety