Safeguard Analytics SA-1N4_old Model SA-1N4 Non-Hazardous Location Gas Detection Features NEMA 4X Enclosure Color Graphic Digital Display Standard 4-20mA Output Optional Modbus RTU Output Optional Local Alarm Relays Compatible with Model SA1 Smart Sensor Modules to monitor combustible gases, toxic gases, oxygen deficiency, volatile organic compounds, hydrocarbons, carbon dioxide, refrigerants ………… Product Data Sheet Product Guide