WireMaster RJ-45 LAN Cable Tester


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What's special about this network testing tool?

  • Verifies point-to-point wiring of RJ-45 patch cables
  • Economical and simple to use
  • 8 LEDs identify the destination of each conductor in cable
  • Checks for continuity in straight-through wiring
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The WireMaster RJ-45 is a compact, hand-held instrument designed to quickly verify the wiring of un-energized, 8 conductor patch cables terminated with RJ-45 connectors. The 8 LEDs flash in sequence if the cable is wired correctly.


TR-3251 Wiremaster RJ-45 LAN Cable Tester 9-1/4" x 5" x 1-1/2"
0.4 lb
TR-10-4275 Universal Carrying Case
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7-1/2" H x 6" W x 1-1/2"D 0.25 lb

This LAN Testers are not intended for use on powered wires or cables. All wires or cables MUST be non-powered, non-grounded and non-connected

  • Uses 1 standard 9V battery (not included)
  • 1-year limited manufacturer warranty


Cable Types AT&T 258A, EIA/TIA T568A or T568B, TP-PMD and any RJ-45 cable
Battery 9 volt alkaline, NEDA 1604A, such as Eveready 522 (Battery Not Included)
Battery Life Approximately 200 hours of testing. Approximately 6 months idle (No cable attached)
Weight Less than 7 ounces with battery
Size 1" x 2-3/8" x 3-5/8"



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The WireMaster XR-5 datacom tester can test patch cables or installed wiring with the detachable remote. It has a portable handheld ergonomic design and checks for continuity, miss-wiring, opens, shorts, crossover and grounding. This tester includes BNC terminator, BNC, RJ-11 and RJ-45 jumper cables. Tests 5 types of cables: RJ-11, RJ-45, BNC, 1394, USB
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