TT-600 BNC Male - Female Video Ground Loop Isolator from OYN-X reduces “Ground Loop Interference” with CCTV signals and is easily installed in a new system or added to your existing setup. This product is ideal for where a video signal is transmitted via cable between points with different ground potentials. (Differences in ground potentials are typically caused by unbalanced power line loads.) Features: BNC male to female with mini cable 25 on both sides. Passive type, no power needed Prevent video-signal distortion caused by video ground loops Eliminates picture tearing, cross talk and rolling. Prevent power cables laid by others interfering with CCTV Signal. Built in TVS (Transient Voltage Suppressors) for surge protection This product is ideal for use in conjunction with the Dual Purpose CAB 20 BNC Extension Cord From OYN-X