Merlin Gas Detector X-Range – Carbon Monoxide (CO) Sensor The Merlin Gas Detector X-Range – Carbon Monoxide (CO) from S&S; Northern gives you reliable and accurate CO monitoring in commercial, industrial and public environments. Designed to work seamlessly with the Merlin range of Gas Detection Panels and Safety Systems, this compact and modern detector gives you safety where CO is a risk. Using semiconductor sensor technology, the X-Range CO detector continuously monitors air quality and alarms if CO levels exceed 50ppm for more than 4 minutes, automatically isolates the connected gas supply. Its traffic light-style LED indicators, dual alarm thresholds and Modbus RTU integration make it perf