AV Switch, 8 in 1 Out Audio Video Selector Metal Housing RCA Switcher for Cable Box DVD DVR Analog TV 8 Input 1 Output or 1 1 input 8 output: Switch between AV sources with button on front panel. No need to plug and unplug. No signal distortion and no timbre loss. Easy install, just plug and play. Apply to security or education and so on. Stronger anti- interference ability and Perfect stability.