The JONARD TOOLS TETP-800 Tone and Probe Kit is designed to quickly trace and identify cables, wires, and wire pairs. This cable tester tone and probe kit is the perfect kit for any Voice Data Video (VDV) professional. The kit includes: TEP-100 Tone Tracing Probe, TET-600 Cable Tester and Toner, (2) 9-Volt batteries Tester and Tone Generator: Provides tone via RJ11 connector or alligator clips Works with our TEP-100 tracing probe or others to identify cables Able to test the continuity of cables and the polarity of telephone lines Includes 9-Volt batteries required for operation Tracing Probe: Plastic probe tip prevents accidental shorts Adjustable volume knob to work silently or to hear tone more easily Works with many other manufacturers' analog tone generators Includes 9-Volt battery required for operation.