HDTV Multi-Switcher 4X1, HDTV Quad Multi-Viewer 4 In 1 Out HDTV Switcher 1080P HDTV Seamless IR Control 3D Support 5 Modes For PC/STB/DVD. It Can Display 4HD Digital Video Signal On The Same Screen, And Has A Variety Of Video Segmentation, Seamless Switching 4 HD Input Signal Synchronously. The Control Methods Of The Switch Is Flexible,it Can Be Switched Via Button And IR Control.