The Trendnet TC-NT2 Network Cable Tester is a comprehensive cable tester for network professionals. This tool allows network installers to accurately test pin configurations of various voice and data communication cables up to 984' (300 m) long. It checks continuity and displays wiring configuration. The built-in audio tone indicator lets you quickly identify faulty cables to assure proper pin and wiring structure. A master unit transmits test signals to its corresponding remote terminator to verify cable reliability.