Upgraded version of WJL-6000. Traditional corona sensor with updated analogue circuit, fast triggers on R11, R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs,HCFCs and blends. 6s preheating time, instantaneous response; 6 adjustable sensitivity, sensitivity of 0.21oz/yr. A flexible probe around 8.26 inches allows detections in difficult and hard-to-reach areas. Direct status indication with audible & visual leakage alarm indicators and dual colour battery indicators. Battery by 4 AAA batteries (Not included) 24/7 US Technician Support via Email and Phone. CLD-100 Refrigerant Leak Detector will respond to all halogenated (including Chlorine and Fluorine) refrigerants. It can also detect halogen gases in fire-extinguishing system. An upgraded version of WJL-6000. Traditional corona sensor with an updated analogue circuit, fast triggers on R11, R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs, HCFCs and blends.