Riiai 2in1 Network Cable Tester & Digital Multimeter, ID Mapping Multifunction Ethernet Wire Tracer with PoE & NCV & Lamp for CAT5 CAT6, Telephone Line Probe Toner Length Measuring Continuity Testing :
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72-9946. Pro Signal, Network Cable Tester, RJ-45/RJ-11 Cable | Farnell UK