This Multi Function Network Cable Tester allows you to test telephone cable, LAN cable, Coaxial BNC and USB cables for wire continuity. You can automatically check cable for continuity, short, open and crosses wire pairs. The coaxial cable port identifies cable connections including shorts, shield opens, and center conductor breaks. You can also use the two speed auto-scan function, and results are displayed by LED Specifications: 1. Faults Indicated: No Connections, Shorts, Opens and Crossover 2. Low Battery Indicator: LED lights to indicate low battery 3. Power: 1 x 9 V 6F22 DC Alkaline Battery (Battery Not Included) 4. Color: Grey 5. Item Dimensions: Appox. 143 x 85 x 25mm 6. Item Weight: 175g (Battery excluded) Operation Instructions: 1. Connect one side of the plug to the Main Tester Unit and the other side of plug to Remote Unit (Remote Unit is separatable from the Main Unit for remote testing) 2. Press the Push Button on tester 3. Read the status shown on LED displays Package includes: 1 x mutifunctional Network Cable Tester 1 x Far End Remote Jack (USB RJ45 RJ11) (Attached to the main unit) 1 x English user Manual 1 x BNC Remote Jack 1 x Carrying bag