The Tempo 508S-G Wire Finder is used to trace or locate dead or energized wires in the ground, in walls, or even under floors within an inch of their physical location. The unit provides reliable results on cables buried up to three feet (1m) deep and lengths up to 1000ft or 300m. The 508S-G can be used to estimate the depth of the underground cable before you dig and the quick-change test leads allow location in any industry.