Quickly and easily check RJ45 network cables and RJ11 cables. Quickly and easily check network cables and RJ11 cables. 1 x RJ45 RJ11 Cable Tester. This LAN Network Cable Tester is required for network installation of RJ-11, RJ-12, RJ-45, CAT5, CAT6, 10/100BaseT, TIA-568A/568B, AT&T 258-A.
