Features:100% Brand New.Size: 105 x 100 x 25mmWeight:118gTest 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， RJ12， RJ45， Cat 5e， Cat 5， 10/100 Base-T， AT&T 258 A， TIA-568A/568B .etcIt can easily clarify cable， continuity， open and short.Verifying Cable continuity， open， short and cross wire pair up to 1000ft with remote kit.9 LED lights to indicated wiring connection on both remote and master unitAuto scanning function for rapid testing.Grounding TestBuild in power switch for power savingOperate with one 9V battery ( Not Included )Package Content:1 x USB LAN Network/Phone Cable Tester RJ11 RJ12 RJ45 Cat51 x English Manual