Check the listing for details. JCHICI TV Wall Processor Video Wall Controller 4K HD Display Open Box No Remote. Condition: Open box. Listed at 39.90 USD. New open box Repackaged Missing remote ,Push button must be pressed to switch modes. See photos for what's included in purchase Eye-catching video walls HDMI video processor allows you to create gorgeous large-scale video walls and digital signage displays via LCD splicing screens.HDMI signal interface with audio decoding, audio and video perfect synchronization, so stunning! 1 Input and 4 outputDisplay input 4K@30Hz ,output 1920x1080P@60Hz. Be compatibled with laptop,computer, set-top box, DVD player etc. Supports one 4K@30Hz signal input and four 1080P@60Hz signal outputs, with a total output resolution of 4K. Plug and Play & 180 RotationNo need any app,quick and easy set up.Support 180screen rotation function in 2x2 mode, the output device requires no more than1080p @ 60 Hz. Note: No 90 degree rotation function. 8 Display ModesSupport 2x2, 1x1, 1x2, 1x3, 1x4, 2x1, 3x1, 4x1 modes for your choice. Can control it fastly via remote control or push button directly. Ideal for television broadcasting,video conferencing, security monitoring and other indoor and outdoor large screen splicing display. 3.5mm audio portHas a separate 3.5mm stereo audio port that can be connected to the external speaker, sound bar, amplifier, etc. To ensure work well, please set the resolution of all screens to 1080p. Specification HDMI input: 3840x2160P 24/30/50/60Hz and below input. Support input HDMI 1.4, HDCP 1.4; HDMI outputs: 1920 x 1080P@60Hz HD resolution output; Input resolution requirements in different modes In 2X2 splicing mode: enter the resolution "1920X1080 or 3840X2160". In 1X2, 1X3, 1X4 splicing mode: enter the resolution "3840X1080". In 2X1 splicing mode: enter the resolution "1920X2160". In 3X1, 4X1 splicing mode: enter the resolution Dimensions and WeightSize: 6.9*3.1*0.9(Inch); Weight: 0.75(lb)