With the Digiwave DGTCT01PRO Perfectional Cable Tester with Multiple Adapters users can detect DC continuity or shorts with a loud tone & LED display. It can be used to identify and trace individual cables when multiple cables are present. The cable installer uses the Digiwave DGTCT01PRO to place a DC current through one end of the desired cable and identifies the cable at the other end with the removable tone device. Simply unscrew the tone detector, attach the push-on fitting to the end of a coaxial cable, and touch the tone detector to each of the cables, when the correct cable from the transmitter location is found, the tone will sound.