Allows you to select between up to 4 different component video sources Ideal for a TVprojector with only 1 component video Input Adds 3 extra S-Video Stereo Phono & Digital audio inputs to your TVGreat for camcorder editing Many TVs or projectors only have one set of Component S-Video stereo audio input or digital audio sockets. This unit means that you can connect 4 different sources & play quality audio video via one set of inputs. Precision switches make selection easy & rubber feet ensure stability.