This Multi-Function Network Cable Tester allows you to test telephone cables, LAN cables, Coaxial BNC, and USB cables for wire continuity. You can automatically check the cable for continuity, short, open, and cross-wire pairs. The coaxial cable port identifies cable connections including shorts, the shield opens, and the 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: yellow/black 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 the plug to the Remote Unit (the Remote Unit is not adjusted from the Main Unit for remote testing, it can be separated) 2. Press the Push Button on tester 3. Read the status shown on LED displays Package includes 1 x multifunctional 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 (NT-NF3468-2PK). This item's condition is New. Its Product Net Content Quantity is 2 and its Product Net Content Uom is 7 oz.