First Alert® model GCO1 is a 120 VAC plug-in with battery backup single station carbon monoxide and explosive gas (propane and natural/methane) combination alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories and other multi-family dwellings as defined in standard NFPA 101. Model GCO1 has been fully tested and complies with, UL 1484, UL 2034 and other agencies that model their codes after the above agencies. It meets building codes where 120 VAC plug-in digital display with battery backup carbon monoxide and explosive gas combination alarms are required.

First Alert® Explosive Gas and Carbon Monoxide Alarm, Combination Plug-In, 120 VAC, 0.09 A, Electrochemical Sensor, Alarm: Audio, 85 dB Alert, Green LED Visual Alert, 10 to 90 % Humidity, Digital Display, 40 to 100 deg F Operating, Plastic, White, 4.3 in Dia x 1.6 in H Dimensions

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• Advanced combination alarm senses carbon monoxide, propane and methane gases
• Electrochemical carbon monoxide sensor the most accurate sensor available as compared to other sensing technologies
• 3-way protection against natural/methane gas, propane gas and carbon monoxide
• Single button test/silence
• Remote control silence/test uses most remote controls to temporarily quiet unwanted alarms and test alarm functions
• Backlit digital display for greater visibility of which hazard is being sensed (gas or carbon monoxide), the hazard level and the peak level
• Low battery warning silence
• Convenient installation options unit plugs directly into the wall or can be mounted higher on the wall using the line cord
• End of life signal provides audible notification alarms needs to be replaced
• 10 to 90% relative humidity
• 85 dB at 10 ft audible alarm