TRIPP LITE Multi-Function Cable Tester with Wire Tracker and Tone Generator (T012-001-K)

This tester works well and allowed me to troubleshoot several problems quickly! I used this for testing multiple wall-jack connections and other cabling in an established facility. Found mislabeled cables and corrected those, and one (in the wall) cable with a bad pin connection (fixed), so it helped to solve a LOT of problems.