Syba 2 Piece Multi Network Cable Tester for RJ45, RJ-11, RJ-12, Coaxial, and Modular Cables (SY-ACC65050) RJ45 (UTP STP), 10/100 Base-T, and Token Ring Cables RJ-11/RJ-12 USOC Telephone/Fax Cables (8P8C, 6P6C, 4P4C) Best cable for Continuity, Short, Open and Cable TypesCoaxial Cable Port: Shows Cable Conditions Including Shorts, Shield Opens and Center Conductor Breaks Separated Remote Unit Allows One Person Testing