MG-4163 Cable Tester Cable Tester for RJ12, RJ11, RJ45, Cat 5e, Cat 5, 10/100 Base-T, AT&T 258 A, TIA-568A/568B .etc Network Cable Tester 100% New. Test correspondingly double-twisted cables 1, 2, 3, 4, 5, 6, 7, 8 and Ground Capable to judge wrong connection, short circuit and open circuit Cable Tester for RJ12, RJ11, RJ45, Cat 5e, Cat 5, 10/100 Base-T, AT&T 258 A, TIA-568A/568B .etc It 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 unit Grounding Test Build in power switch for power saving Power: 9V battery ( Not Included ) Size: 100 x 100 x 25mm Weight:124g OEM Package : we can do as your request