Kidde 2101004 Worry-Free Sealed Lithium Co Alarm (Dc)

The Kidde Worry-Free CO Alarm provides continuous protection against elevated levels of carbon monoxide. It features a ten-year sealed lithium battery for maintenance-free operation and a ten-year NightHawk sensor that sounds an 85 dB alarm when dangerous levels of CO are detected. In addition, the unit is self-activating with an end-of-life signal that chirps when it needs replacing.