This rj11 rj45 network cable tester can judge wrong connection, short circuit adm open circuit. Put cables into both main cable tester and remote tester. The lights of the main tester will turn on sequent from 1 to g.
• ports : 2 x rj45 and 2 x rj11
• power by : dc 9v battery (not included)
• material : metal, plastic
• weight : 111g
• package content : 1 x network phone cable tester