RJ45 RJ11 Tester Networking Tools Supports Printer USB Cable Testing. black

Description

Test of double-twisted cables, Main tester:1-2-3-4-5-6-7-8-G Remote tester:1-4-3-2-5-6-7-8-G. Put cables into both main tester and remote tester. The lights of the main tester will turn on sequently from 1 to G. With this RJ45 network cable tester, you can easily judge wrong connection, short circuit and open circuit.