Actpe Portable Halogen Gas CFC HFC Refrigerant Leak Detector Checker with Case Audio and visual LED light alerts warn when leak is found, even the leakages gas is rarely, Reads in just 6 seconds. Detects all HFC (134a) CFC refrigerants, protect the environment, Re-set function enables you to set the meter to ignore ambient concentrations of halogen. Sensitivity adjustment dial, Highly precise for accurate readings time after time, Battery life indicator. Flexible probe allows you to reach into awkward corners and tight spaces, check your entire refrigerating system and air conditioning units. Package included: 1 x Detector, 1 x Carry/storage case, 1 x Instructions.