Harris Tone Hunter tone probe detects
audio signals on wires up to 12" away.
Use an audio signal generator or build a portable audio warbler with output
up to 10v peak - peak to feed signal into one end of cable
pair to be checked.
probe over broken out wires and the one with tone can be clearly identified.
We installed brand new fresh 9v battery before shipping.
Try it once and
your tool box will never be without one again. Priced
at a fraction of original