Fixed Gas Detector and Controller For Use With Macurco Control Panel Gas Detected Hydrogen Sulfide Standards cETLus Certified Includes Manual Product Type Stand-Alone Detector Controller Mounting Location Wall Number of Relays 2 Sensor Type Electrochemical Visual Alert Type Green LED Display Type Digital Operating Temperature - Minimum -4 Degrees F Operating Temperature - Maximum 122 Degrees F Number of Gases Detected 1 Coverage Area 900 sq ft Interchangeable Sensors Yes