Features: brand new and high quality for network RJ-45 cable continuity tester. This tester also tests BNC network cables. Double twist wire test, turn on the power. Main tester: 1-2-3-4-5-6-7-8-G Remote tester: 1-4-2-5-7-8-g. If you test cables of the same axes, BNC lights up when the cable works. It works with a 9V battery (not included). Specifications: Material: ABS Color : White Size: approx. 12x10cm/4.72x3.94in Power Source: DC9V Battery Required (not included) Note: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We are sure that the style is the same as the pictures show. 2. Please allow slight dimension difference due to different manual measurements. Package includes: 1 x Network Cable RJ45 BNC Tester