The Tone&Probe test kit enables quick and easy tracing and identification of data, telephone and coaxial cables. The tone generator offers comprehensive test functions for fault diagnosis on the line and checking services, faster troubleshooting with power supply for external talk sets and polarity and continuity testing on the cable. The output power ensures unrestricted result output via the LED signal display and the clearly audible loudspeaker, even over longer cable distances. The inductive receiver allows even weak signals to be located with acoustic and optical signal output and is equipped with a headphone jack for working in strong background noise and an LED flashlight for working in dark environments.