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Hobbes 256713D Digital Smart One and Smart Probe Kit Cable Tester with Tone Generator, Tone Tracing Probe and Wire Mapping, Red,Black: Multi Testers: Amazon.com: Industrial & Scientific
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Hobbes 256003-R LANsmart TDR Network Cable Tester with Tone Generator, Port Finder, Cable Length Tester and Wire Mapper: Amazon.com: Industrial & Scientific
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