There are several sets home entertainment appliances, such as DVD player, projector, video game console, stereo speakers, digital cameras...... And so on, each time the equipment used to replace AV terminal plug should be replace, not only cumbersome and easy to damage the machines, how to do it? It does not matter, (1 to 3 groups AV video signal switching device) seal the deal of all! Multi-machine integrated with the expansion, extension, switching and other functions, with Group 3 video input source, a group of High-definition video signal output, the output termination on television, the input can be connected to any standard RCA connectors for audio-visual equipment, video games host and so on, then do not need to plug the corresponding device, do not need an external power supply or install the battery, and can even extend the range line, so you are free to play in the rich audio and video world to facilitate the easy to use, simple operation.