This Network Cable Tester & Wire Tracker Tool is essential for professionals and DIY enthusiasts working with RJ45, RJ11, and other cables. It quickly identifies and traces wires in LAN, telephone lines, and more, saving time and reducing errors. Supports RJ45, RJ11, and universal cables Continuity and DC voltage testing Built-in LED flashlight for dark workspaces Earphone support for noisy environments Durable plastic housing for long-term use Ideal for network setup, maintenance, and troubleshooting in home or office settings.