The CableTool Multifunction TDR is for installing and maintaining metallic cabling. It utilizes TDR technology to quickly determine the distance to a cable fault (open or short) in feet or meters. Over 65 pre-stored standard cable NVP values and four user defined values are included. A voltage measurement capability up to 250 Vrms is provided to warn the user of potentially unsafe test conditions and to identify the type of circuit under test. Additionally, a tone generator function with selectable tones allows for cable tracing with most tone probes. The CableTool includes standard banana jack connectors which are compatible with a wide range of leads or connectors for testing any cable type. Unit includes four AA batteries and alligator clip leads.