• This tool tests 5 common LAN and computer cables up to 600ft long: RJ-45, RJ-11,
   1394 (Firewire), USB, and BNC. It checks for: Continuity, Miss wiring, Open lines,
   Shorts, Crossover, and Grounding.
• Tests 5 types of cables: RJ-45, RJ-11, BNC, 1394, USB.Simple one button test.
• Tests installed wiring or patch cables.LEDs indicate connections and faults.
• Beeper provides audible annunciation of test results.
• Tests shielded (STP) or unshielded (UTP) LAN cables.Able to test cable lines up to 600ft long.