D-TEK Pro Leak Detector508 202 G11 The ultimate in speed and sensitivity Introducing D TEK Pro, the new refrigerant leak detector setting the standard in speed and sensitivity. With detection down to 0. 1 ppm and superior air flow, D TEK Pro finds smaller leaks from a greater distance. No need to switch between several modes the all in one Pro Mode combines Cloud Hunting and pinpointing, giving D TEK Pro the ability to locate the cloud and identify the leak location