The Kidde 21025759 AC/DC carbon monoxide alarm plugs directly into your home's standard wall outlet making installation quick and easy. The Kidde 21025759 carbon monoxide alarm with battery backup provides you and your family with a warning signal to protect against dangerous levels of carbon monoxide in your home. The 2-AA battery backup provides protection even during power outages when many CO incidences occur.

Product Features:

• 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.
• Loud 85 Decibel Alarm - Alerts of deadly CO gas.
• Test/Reset Button –Tests the unit for proper operation. Resets the Carbon Monoxide alarm.