Kidde - The KN-COB-DP2 AC/DC carbon monoxide alarm plugs diretly into a home's standard wall outlet, making installation quick and easy. The 2-AA battery backup provides protection even during power outages when many CO incidences occur. The Kidde AC/DC carbon monoxide alarm has a 10-year limited warranty.
Tamper Resist Feature - Can be activated to cause unit to go into alarm if it has been unplugged or has come loose from the outlet.
2 AA Battery Backup - Provides continuous protection even during power outages.
Low Battery Hush - Silences low battery chirp warning for up to 12 hours in order to maintain protection without having to replace the batteries at an inconvenient time.
Event Memory - If the unit has detected CO concentrations of 100ppm or greater, the green LED will flash every 10 seconds.