Device switches between 4 s-video/audio sources automatically. When video signal is detected from 1 of the 4 inputs that channels video and audio are switched to the outputs. To select a different input simply turn on that piece of equipment and the video and audio signals will override the previous signal and route it to the output. Switching is automatic with no user interaction. This unit can easily be hidden behind the equipment and provides a simple solution for switching video devices. A L.E.D. indicator is provided on the front panel for visual indication of what input is selected. Unit can also be operated manually.