Fixed Gas Detector For Use With Macurco Control Panel Gas Detected Carbon Monoxide Nitrogen Dioxide Standards cETLus Certified Includes Manual Product Type Stand-Alone Detector Controller Mounting Location Wall Number of Relays 2 Sensor Type Electrochemical Visual Alert Type Digital Display Display Type Digital Operating Temperature - Minimum -4 Degrees F Operating Temperature - Maximum 122 Degrees F Number of Gases Detected 2 Coverage Area 7 500 sq ft