RJ-45/RJ-11/BNC/1394/USB. Checks for continuity, miswiring, opens, shorts, crossover, and grounding. Simple one button test. Ergonomic, portable hand held design. Tests installed wiring or patch cables. Remote attaches to main unit. 600 feet test distance (RJ-45, RJ-11, BNC). Built-in battery test. LEDs indicate connections an faults. Beeper provides audible annunciation of test results. Tests shields in 1394 and USB cables. Tests shield (STP) or unshielded (UTP) LAN cable.