Klein Tools


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LAN Explorer™ Data Cable Tester with Remote

This simple, compact data cable tester for RJ11, RJ12 and RJ45 terminated voice and data cables for Miswires, Open-Faults, Short-Faults and Shield. Instant LED responses indicate cable status. The test remote stores securely in the tester body. The Auto Power-Off feature shuts the tester down automatically to save the 9V battery (included).


  • Single button testing of RJ11, RJ12 and RJ45 terminated voice and data cables
  • Tests CAT3, CAT5e and CAT6/6A cables
  • Fast LED responses indicate cable status (Pass, Miswire, Open-Fault, Short-Fault, and Shield)
  • Test remote stores securely in tester body
  • Compact tester easily fits in your pocket
  • Auto Power-off feature to conserve battery life (9V included)
  • Low battery indicator
  • Replacement remote (VDV999-150) available (sold separately)


  • Type: Twisted Pair, DATA, Voice, LAN 
  • Application: Cable Testing
  • Special Features: LED response
  • Cable Type: CAT3, CAT5e, CAT6/6A
  • Overall Length: 5" (127mm)
  • Overall Height: 1.25" (32mm)
  • Overall Width: 2.5" (63.5mm)
  • Material: Plastic and Stamped Metal
  • Batteries: (1) 9V
  • Display: LED
  • Included: Tester, Remote, 9V Battery


  • Always wear approved eye protection.
  • Read all safety Information before using the product.
  • Carefully read all instructions.
  • Designed for use on unpowered/dark cable systems.
  • Do NOT connect to live AC power.
  • For indoor use only.

WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

https://productimageserver.com/literature/quickGuide/79097QG.pdf https://productimageserver.com/literature/brochure/79097BR.pdf https://productimageserver.com/literature/installations/79097IN.pdf https://www.youtube.com/embed/blj04uc38nI