A practical search device for tracking and identifying lines and cables. It can also check telephone and network cables (coaxial, 10/100/1000 Base-T) for proper wiring and continuity. The LSG-3 consists of a tone generator that modulates a high-frequency signal onto the line being tested, as well as a highly sensitive inductive receiver that can reliably locate cables even when they are 15 cm within a wall. This allows you to accurately determine the path of the cable.