Fixed Gas Detector, For Use With Macurco Control Panel, Gas Detected Ammonia, 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, Number of Gases Detected 1, Ties Into Building Automation Panels, Fire Alarm Panels, Coverage Area 900 sq ft, Sensor Life 2 yr, Interchangeable Sensors Yes, NEMA Enclosure Rating Not Rated