The Klein Tools VDV500-920 Digital Tone Generator and Digital Wire Tracing Probe Set can be used to trace and locate network cables more effectively within bundles, at switches, patch panels or termination blocks. Users are provided with a set that offers digital and analog signaling all in one toner and probe. This unit is designed with powerful cable tracing and locations technology for any work environment. Use the digital mode to trace and locate data cables on active networks. Users can use the analog mode to isolate individual wire pairs and trace voice, data, video and audio cables. This unit also features wire mapping capabilities to check pin-to-pin connections with shield detection.