This multi-cable LAN tester is an indispensable tool in network installation and maintenance. It is designed to quickly test wire continuity, miswiring and polarization of thin Ethernet (BNC/TNC), 10/100BASE-T (UTP/STP), AT&T 285A, TIA 568A/B, token ring and RJ11/12 cables. By using the remote terminator, you can easily test cables before or after installation. Includes protective leatherette carrying pouch. 9V battery required for operation not included.