The Aquatronics SDAD is a ground fault location unit for cables and works with a thumper to give direction to and pinpoint the faults. Ease and speed of fault finding have been greatly enhanced with the addition of the S.D.A.D. to the Aqua-Tronics line. The Super DAD conveys more information about the fault location, and faster, with the addition of new microprocessor controlled electronics that provide bright, easier-to-see-and-read signals - day or night.