Description :  1 Pair BZX-217L HD CCTV Via Twisted Video Balun Transmitter for CVI TVI AHD 0-300m Anti-Static Lightning Strike Protection     Features :     No power required.  Outstanding interface rejection and transient protection.  Male BNC allows connection directly to tha camera or DVR.  Compact size and easy installation.  Built-in transient suppression protection.  Video transmission distance: 0-300 meters (CAT-5 \/ 5E \/ 6).  Immunity: Built Antistatic \/ lightning strike protection.      Specification :     Frequency Response: DC to 8MHz  Attenuation: 0.5db typ  CMRR (Common Mode Rejection Ratio): 60db  Impedance: BNC: 75 Ohm \/Terminal: 100 Ohm  Material: ABS Plastic  Quantitty: 1 Pair  Color: Black      Package includeds :     2 x BZX-217L Video Balun Transmitter      Details pictures :