Wale&Morn WJL-6000pro Freon Leak Detector for Halogen Gas Leakage, Air Condition Refrigerant Leak Detector HVAC R22 R410A R134A R290 R600A R1234yf CFCs HCFCs HFCs HC HFO

It’s good but not working well

Three trips back to the mechanic they could not find the leak. 15 minutes of probing, we diagnosed a bad compressor. Worked as it is marketed

I test it by R-22, it doesn't work. I have to buy other brand.

I tested it with 500 ppm R134A and it had difficulty but with slightly higher concentrations it workded ust fine for an economy priced instrument.

Quit working within a month, return processed without problem