RiteAV - Coaxial BNC/CCTV Surge Protector (Shielded) for Thunder & Lightning Protection (Male to Female) Supported Standards: Coaxial BNC Connections up to 75 OHMS Connectors: BNC Male to Female , just plug cable in and ground device Note: Must be wired to ground near the protected device A must have if you are using outdoor rated cable Video Surge Protector