Jonard Tools Cable Tester Tone & Probe Kit Designed to quickly trace and identify cables, wires, and wire pairs, the Jonard Tools TETP-800 tone and probe kit is the perfect kit for any Voice Data Video (VDV) professional. This kit features the following:Tester & Tone Generator:Provides tone via built-in RJ11 connector or alligator clipsWorks with our TEP-100 tracing probe or others to identify cablesAble to test the continuity of cables and the polarity of telephone linesIncludes (1) 9V battery required for operationTracing Probe:Plastic probe tip prevents accidental shortsAdjustable volume knob to work silently or to hear tone more easilyWorks with many other manufacturers' analog tone generatorsIncludes (1) 9V battery required for operation