Save the cables and conductors with the lsg 4 dmm the lsg 4 uses a high frequency tone generator which modulates a hf signal on the test cable it also includes a highly sensitive inductive receiver which can detect cables up to 15 cm inside a wall this allows you to track cable layouts precisely the signal of the sound generator can be feeded alternatively via a rj11 connector or via an alligator clip in the conductor that has to be measured furthermore the device is available with various