This network cable tester can help test installed wiring or patch cables, test shielded (STP) or unshielded (UTP) LAN cables and test shields in USB cables. Suitable for testing 4 types of cables: RJ-45, RJ-11, USB and BNC. Features: Can test from 2 remote poi nts. Beeper provides audible notice of test results. Low battery Indicator. Simple one button test. LEDs indicate connections and faults of wire and pins. UTP and STP LAN cables, terminated in RJ-45 male connectors (EIA/TIA 568). RJ-11 cables with male connectors, 2 to 6 conductors installed. USB cables with Type A flat plug on one end and type B square Plug on other end. BNC cables with male connectors. Specification: Faults Indicated: No Connections, Shorts, Opens and Crossover Low Battery Indicator: LED lights to indicate low battery Battery: 1 * 9 V 6F22 DC Alkaline Battery (NOT Included) Color: Grey Size: Approx. 162 x 85 x 25mm / 6.38 x 3.35 x 0.98inch Weight: Approx. 216g / 7.6oz Package List: 1 x 4-in-1 Network Cable Tester 1 x Far End Remote Jack (USB RJ45 RJ11) (Attached to the main unit) 1 x Carrying Bag Note: Please allow small size error due to manual measurement. Thanks for your understanding. .