The Bacharach 6401 Series or MGS-250 Refrigerant Leak Detector is capable of detecting the presence of escaping refrigerants. It is model specific for five different CFC refrigerant types: R-22, R-123, R-134A, R-407A and R-410A. An selectable analog output is provided to allow interfacing to computer monitoring equipment. An alarm relay is also provided with adjustable set point and selectable time delay function to prevent nuisance alarms along with LED and Display. The 6401 Series is designed to be used as part of a control system that helps to prevent the formation of a hazardous environment when properly installed and maintained.