Tone Generator And Amplifier Probe Kit This heavy-duty kit with audible tone easily identifies wires or cables. The insulated inductive probe tip prevents shorting conductors. Tests include a wire trace, continuity test, clear/busy/ringing line test, and tip/ring identification. Other Features This product features alligator clips for non-terminated cables, and modular connectors for direct connections to telephone and internet wiring. It also has selectable continuous or variable tone generation, as well as a built-in speaker on probe with sensitivity control. Includes Alligator clipsRJ45 and RJ11 modular connectors9V batteryCase ApplicationsWire tracingShort and open wire testsContinuity checksTelephone line checks (clear/busy/ringing)Cable identificationRouting checksNetwork installation