Kidde 21010047 Worry-Free Sealed Lithium Co Alarm W/ Digital Display (Dc)

The Kidde Worry-Free CO Alarm (with display) 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. It also displays the current levels of CO, updating them every 15 seconds. In addition, the unit is self-activating with a Peak Level Memory and an end-of-life signal that chirps when it needs replacing.