1、[Input And Output] The video wall controller distributes one HD Multimedia Interface or VGA input (PC, laptop, set top box, DVD player, for PS3, etc) to 4 HD Multimedia Interface outputs (LCD TVs, rear projection units, etc) at the same time to create large video wall and digital signage display. 2、[4K At 30Hz UHD Resolution] 2x2 video wall controller supports 4K at 30Hz or 1080P at 60Hz resolution output to enjoy high definition visual effect. But please use a premium HD Multimedia Interface cable and set the input and output resolution to 1080P if the picture is blurred. 3、[180 Degree Rotation And Edge Masking] Supports 180 degree rotation for each screen. When in 2x2 mode, invert the TVS and use the rotation function. This function adjusts the orientation of the screen to the thinnest edge and reduces the thick center bezel. Edge masking reduces the space between each screen. 4、[Multi Mode] The video wall processor supports 4TVS or the following TVS modes, such as 2x2, 1x1, 1x2, 1x3, 1x4, 4x1, 3x1, 2x1, in order to meet different splicing needs and splicing scenarios. With remote control, easy to switch and use. 5、[Separate Sound Setup] TV wall controller has a separate 5mm stereo sound port for connecting speakers, bar speakers, etc. As long as the input device has sound, the display will get sound through this controller 2x Digital sound formats such as DTS HD, for Dolby trueHD, LPCM1, for Dolby AC3, DSD are supported. 1 x Video Wall Controller1 x Power Adapter1 x Remote Control1 x User Manual Item Type: Video Wall ControllerMaterial: Aluminum AlloyRemote Control Battery: 2 x AAA (Not Included)Input Resolution: 4K, 30HzOutput Resolution: Supports 1080P, 60HzSound Format: StereoMaximum Working Current: 300mAOperating Temperature Range: 0-45℃