R.J. Enterprises - Link Tester Diagnostic Tool for RJ45, RJ11, and DEC Cables. Test LAN Network Phone Wires

Designed to be user-friendly and simple to use, this Link Tester will test and detect faulty or mis wired connections in RJ45, RJ11, and DEC cables.
How to use:
1. Connect the ends of the cable to the Link Tester
2. Hold the 'Test" button
3. Numbered LED lights will light in sequence according to the positions of the connections in the wire. Absence of LED light indicates bad or no connection.

Uses 9V battery; batteries included.