A better life because of you are wonderful.Features:100% Brand new and high qualityTest correspondingly double-twisted cables 1， 2， 3， 4， 5， 6， 7， 8 and GroundCapable to judge wrong connection， short circuit and open circuitCable Tester for RJ11， RJ45It can easily clarify cable， continuity， open and short.LED lights to indicated wiring connection on both remote and master unit Grounding TestBuild in power switch for power savingSpecifications:Condition: brand newQuantity: 1pcSize: approx 10.5*10*2.7cmPacket content:1x Tester1x PouchHave a wonderful day.