Helpful-locating & tracking buried and hidden wires and other hidden-wires. Only for wires & cables, NOT FOR sprinkler or irrigation valves Easily locate pet fence wires, metals wires, metals pipes, electrical wires, ect Locate-Determining Which Receptacles are on specific circuits，track-Pinpointing Drill Sites before drilling Wire tracer range-up to 2 feet deep and 1000 feet in length WARNING: Do not use on live circuits to avoid damaging the Tester! This device is ONLY to locate non-energized Cable WARNING: Only for single-core or two-core parallel wire, NOT FOR multi-core wire and bundled wires. 9V battaries is NOT included.