USI Electric MCN400B 2-in-1 Plug-In Smart Carbon Monoxide/Natural Gas Alarm, Solid State/Metal Oxide Sensor, 120 VAC/Battery, 85 dB at 10 ft

USI Electric Carbon Monoxide/Natural Gas Alarm, 2-in-1 Plug-In Smart, 120 VAC/Battery Power Source, Solid State/Metal Oxide Sensor, Alarm: Audible, 85 dB at 10 ft Alert, LED Color Display Visual Alert, 10 to 95 % Humidity, 0 to 120 deg F Operating, 4.38 x 1.55 x 2.5 in Dimensions

The USI Electric MCN400 plug-in carbon monoxide and natural gas smart alarm is a 2-in-1 device that provides double the protection with a single installation. This dual sensing alarm protects against two deadly household threats, carbon monoxide and natural gas (or methane). Perfect for new or replacement installations, the 120 VAC alarm is suitable for houses, apartments and mobile homes. The compact plug-in design covers only (1) outlet for a fast and easy installation with no wiring required. This alarm features microprocessor intelligence to eliminate nuisance alarms, a single silence/test button to quiet a non-hazardous alarm and an end of service life warning that sounds when it time to replace the battery (approximately 7 years from activation). Three LED colors display the status of the alarm, power, CO and gas in your home. The 9 VDC alkaline battery (included) continues protection in the event of a power outage.