The CPS Leak-Seeker I LS1 is an electronic refrigerant leak detector that can detect Hydrofluro-Olefins (HFO), Chlorofluorocarbons (CFC), Hydrofluorocarbons (HFC), and Hydrochlorofluorocarbons (HCFC) refrigerants such as R-410a, R-13, R-12, R-22, and R-11. It comes with a carrying case and weighs 1.125 lb.