1 BNC video input, 4 channel BNC video output for public video systems, multi-screen monitoring system and other occasions.For CCTV surveillance cameras, media players, DVRs, satellite receivers, CATV set top boxes and other videodevices with BNC or coaxial composite video connectors 1×4 BNC Coax Video SplitterInput: BNC FemaleOutput: (4) BNC Female Split one signal to four displays simultaneouslyAmplifies signal for duplication and to provide long distance transmissionTransmission Range: Up to 500MPowered by DC9V 500mA (power supply included)Enclosure: MetalEasy installation, just plug and playFCC and CE certifiedPackage included: 4 Port BNC Splitter