I tested the first cable with this thing for too long. It turned out to be defective, even known working cables were tested with 2 dead wires. The tester turned out to be working, but apparently 2 wires, 3 and 5, were unresponsive. Maybe I just got a bad one, but I'll use a different brand.
Enhanced Fluke T6 1000 with FieldSense Technology for Electrical Applications
5 Review
Mastech MS6812 Telephone Tracker Network
9 Review
π― Accurate One-Push Detection with Hitron Coaxial
3 Review
NOYAFA Underground Portable Detection Electrical: Unearthing Efficient Electrical Solutions
6 Review