Feature:1. Large Screen Stitching: This 2X2 HD multimedia interface video wall controller supports 1 HD multimedia interface input and 4 HD multimedia interface outputs. Divide a complete high definition image signal into 4 blocks and distribute them to 4 video display units, such as rear projection units, LCD TVs, etc.2. Multiple Splicing Methods: Video wall controller uses 12V power supply, over current protection, and stable performance. Gold plated interface effectively reduces data transmission loss and improves signal transmission efficiency. Support multiple splicing, support splicing 2X1, 3X1, 4X1, 1X2, 1X3, 1X4, 2X2.3. HD Output: This video wall controller supports HD multimedia interface2.0 input and supports 4 HD multimedia interface outputs. Supports 4K 60Hz and below input. Support 1920 x 1080P at 60Hz HD resolution output. Also features RS232 control and SPDIF sound output.4. High Performance: The 4K video wall controller is made of metal material, which is anti interference and corrosion resistant. There are cooling holes on the side, which can effectively dissipate heat and improve the performance of the whole machine.5. Scope of Application: 2X2 TV wall controller supports a variety of splicing, plug and play, and simple operation. Equipped with remote control shortcut control, support image rotation. Widely used in jewelry stores, shopping malls, showrooms, company halls, clothing stores and other scenes.Specification:Item Type: 2X2 TV Wall ControllerMaterial: IronColour: BlackVoltage: 100-240VRemote Control Battery Type: 2 x AAA Batteries (Not Included)Power Supply: 12VHD Multimedia Interface: 2.0Input Resolution: 4K 60Hz and BelowOutput Resolution: 1920 X 1080P at 60Hz.Package List:1 x 2X2 TV Wall Controller1 x Remote Control1 x Adapter1 x RS232 Operation Manual1 x Manual