Review on Optimized Elitech WJL 6000 Refrigerant Condition Detector by Kris Martin

Shows coolant leaks where there was no leak. If you accidentally touch the copper pipe, it will think it has found a leak. Even after you pull it out, it keeps beeping until it turns off and on again. Comparing this to a real leak indicates a leak. But it's useless if he thinks everything else in the world is leaking. If I turn the sensitivity down, it doesn't detect anything even if it's placed directly in the refrigerant stream. I only found the leak when I got lucky and saw oil residue on the condenser.