This 2030-DSR Kidde Carbon Monoxide Alarm is a lightweight, battery-operated carbon monoxide (CO) alarm, providing long-term detection and continuous monitoring of CO levels. This Kidde carbon monoxide alarm is easy to install and can be used almost anywhere in the home such as living rooms, hallways, bedrooms and landings, with two AA batteries and fixings included. This carbon monoxide alarm features a 10-year electro-chemical sensor that lasts longer than most standard CO alarms, a test/reset button to test the alarm's function as well as multi-functional green, amber and red LEDs to show power, fault and alarm status.