Newlink RJ45 / Cat 5e / Cat 6 Cable Tester Used used to check wiring pinouts on RJ45 patch cables, or for testing wall ports & patch panel wiring in structured buildings using the included remote unit. Comes with carry pouch. Simple to use with an easy read LED display Checks cable for continuity For use with RJ45 (8P8C) UTP or STP Patch Cables. For use with RJ45 (8P8C) UTP or STP Patch Cables. Adjustable speed settings. Maximum test length: 1000 ft (305m) Supplied with 9 Volt battery & Carry Case Excellent quality.