Features:100% brand new and high quality.Main tester: 1-2-3-4-5-6-7-8-GRemote tester: 1-4-3-2-5-6-7-8-GCapable to judge wrong connection， short circuit and open circuitCable Tester for RJ12， RJ11， RJ45，for Cat 5e，for 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 unitGrounding TestBuild in power switch for power savingSpecifications:Power: 9V battery ( Not Included )Color: White & greenMain tester size: approx. 108*68*28mm(L*W*H)Remote tester size: approx. 107*37*27mm(L*W*H)Net weight: 113gPackage Includes:1 x Network Cable Tester RJ11 RJ12 RJ45 Cat51 x Pouch bag