Secure your home against the poisonous effects of tasteless, odorless carbon monoxide. This Kidde Nighthawk premium carbon monoxide alarm features continuous monitoring and display of CO levels, showing updated digital readings every 15 seconds. Acute, long-lasting sensor and loud, 85-decibel alarm alerts you before the level becomes dangerous. Test/silencer button allows you to check electronic functions or quiet the alarm while you locate the source of trouble. Plugs into any 120V AC household outlet. 5-yr. limited manufacturer"s warranty. No. KN-COP-DP. Imported. 5-1/2Hx3-1/4Wx3-9/10D"