This instrument can be test 10 Base-T, EIA/TIA-568A, EIA/TIA-568B,AT&T258A and Token Ring cables.
Just connect RJ45 or BNC cable to the tester, and switch it on, it will tell you if the cable is correctly wired. If the cable is shielded, you may check the cable's integrity
It comes with a 9V battery and a nylon carrying bag.