Features: Test all contain halogen's refrigerants Adjust sensitivity, all instruments can automatically adjust to the optimum detecting state; Built-in voltage, high accuracy and using ultra-low power IC design, make the work is more stable This Detector is a boot reset and automatic follow function, can ignore the environment halogen gases concentration level USES the high quality sensors, the work high sensitivity, long life expectancy. This product has the function of the sensitivity stepless speed regulation, can adjust in testing Applicable scope:Not only can be used in automobile air-conditioning system, also can be used in:(1) can detect air conditioning, the refrigeration system and refrigerant recovery device. Instrument for all the halogen gases (including chlorine and fluorine) has responce, but still not limited these:E.G.R 12, R11 CFCs, R503 R500, etc...E.G.R HCFCs R123, 22, R124, r114 etc...E.G.R 134a Nathan Road, R404a HCFCs and R125 etc...Still can detect other compounds, such as AZ - 50, HP62, MP39, etc...(2) the detection of ethylene oxide on the medical equipment gas leak hole (detection halogen thrusters);(3) the SF high voltage circuit breaker detecting 6;(4) detection most fluorine, chloride, bromine (halogen gases);(5) the detection fire-extinguishing systems, dragon gas. Package includes: 1pcs Gas CFC HFC Refrigerant leak Detector .