HVAC, Industrial, Automotive uses. The perfect tool for maintaining any air-condition or cooling system utilizing a compressor and refrigerant. Unit features a newly developed Microprocessor Controlled sensor with advanced DSP which is extremely sensitive to the full variety of halogenated refrigerants. Automatic Ambient Reset function sets the unit to ignore ambient concentrations of refrigerant. The unit includes a High-Low Leak Sensitivity Selector and features an Audible Alert along with a Multi-Color Visual Display to indicate adverse conditions.