Features： 1.1080P HD: 2x2 TV splicer supported input video resolutions: 3840x2160P 25, 30Hz, 1920x1080P 25, 30, 50, 60Hz; output resolution: 1920x1080P 25, 30, 50, 60Hz (per screen resolution); HD multimedia interface 1.3 and HDCP 1.4 compliant, plus Separate 3.5mm stereo sound port to connect to external speakers, amplifiers, bars, etc. 2.2x2: TV wall controller supports HD multimedia interface or DVI input and 4 HD multimedia interface outputs, the main function is to split a complete HD multimedia interface, DVI HD image signal into 4 pieces for distribution to 4 video display units (such as rear projection units, LCD TVs, etc.). With 4 HD multimedia interface HD video display units to form a large moving image wall. 3.8 Adjustable Display Modes: Video wall controller can connect up to 4 LCD TVs or other displays and can support multiple display modes, such as 2x2, 1x1, 1x2, 1x3, 1x4, 4x1, 3x1, 2x1. All these modes provide multiple splicing options and the modes can be easily switched by infrared remote control. RS 232 advanced remote control is also supported. 4.180 Degrees Screen Rotation: 2x2 video wall controller with rotation function, you can flip the image of HD multimedia interface output 1 and output 2 by 180 degrees, which can adjust the screen to the direction of the thinnest edge and reduce the thick middle bezel. The edge mask function can correct and align the border and image edges to make multi screen more comfortable. 5.Easy Installation: Video wall controller is plug and play, no driver required. Heat absorption and dissipation is fast and more durable. Gold plated interface reduces data transmission loss and increases signal transmission speed. It is the best choice for shopping mall video exhibition, video conference, security surveillance and other large screen splicing display. specification：Item Type: 2x2 TV Splicer Material: Metal Plug Voltage: 100-240V Resolution: 4K Sound Format: Stereo Maximum Operating Current: 300mA Remote Control Battery: 2 x AAA Not Included PackageList：1 xVideoWallController 1 xPowerAdapter 1 xRemoteControl 1 x Instruction Manual Note：180 degrees rotation can only work in 2x2 mode, the output resolution does not exceed 1080P at 60Hz.