Designed with solid electrolyte semiconductor sensor, HHLT-2 can detect leaks of halogenated (chlorine- or fluorine-based) refrigerant gases. These include HFC, HFO, HC, HCFC, and CFC refrigerant blends as well as approved replacements R-22 and R-1234yf. CE-compliant unit, suited for chemical, laboratory, food, and HVAC applications, offers triple-redundant leak indication and 3 sensitivity levels. True mechanical pump draws in samples for increased sensitivity (0.05 oz/year to R-134a).