•This 3X3 splicer supports 1 HDMI input and 9 HDMI outputs •The main function is to divide a complete HDMI high-definition image signal into 9 pieces and then distribute it to 9 video display units (such as rear projection units, LCD TVs, etc.), to complete the HDMI high-definition image signal with 4 HDMI high-definition display units and then distribute it to 9 video display units •Finish with 4 HDMI HD video display units to form a large dynamic image screen Specifications: •Power: power switch •Lock: key lock switch, press once to lock the remote control keys, except power and audio are invalid •Audio: mute/non-mute switching key •Numeric buttons: switch between different modes •1: Switch to 1x1 mode •2: Switch to 2x2 mode •3: Switch to 3x3 mode •4: Cycle through {3x4, 4x3, 4x4} modes •5: Switch to 1x2 mode or 2x1 mode •6: Switch to 1x3 mode or 3x1 mode •7: (sub): •7.1 Switch to 1x4 mode or 4x1 mode •7.2 Button -, used in conjunction with other buttons, e.g. to increase the edge, to switch to the previous mode •8: Switch to 2x3 mode or 3x2 mode •9: (add): •9.1 Switch to 2x4 mode or 4x2 mode •9.2 Key +, used in conjunction with other keys, such as reducing the edge, switching to the next mode •Edge: edge adjustment function, used in conjunction with the keys sub and add: •Press, set to edge modification mode, and then you can directly press the numeric key or to modify the size of the edge, and then press it again to exit the edge modification mode •Mode: mode is switched cyclically among {1x1, 1x2, 2x1, 1x3, 3x1, 2x2, 1x4, 4x1, 2x3, 3x2, 2x4, 4x2, 3x3, 3x4, 4x3, 4x4} •RX edit: screen input resolution toggle, cycle through {1920x1080 60Hz, 3840x2160 30Hz, 3840x1080 60Hz, 1920x2160 60Hz, 1920x3240 30Hz} •TX resolution: switch the resolution of screen output, switch it in {1280x720 60Hz, 1800x1350 60Hz, 1920x1080 60Hz, 1920x1440 60Hz, 2560x1600 60Hz, 3840x2160 30Hz} cycle •Mirror: screen flip: switch in {up-down flip, left-right flip, up-down left-right flip} cycle •Press, set to mirror mode, and then you can directly press any number button to make the output screen mirror flip, press again to exit the screen flip function •ID: set the ID of the box, use with numeric buttons 1~3: •+ Press: Set the ID of the box to 1 •+ Press to set the ID of the box to 2 •+ Press: set the ID of the box to 0 •(Remarks: the default box ID is ID 0, when the number of displays in the mode is more than 9, you need to connect additional displays to the second board and set the first box ID to 1 and the second box ID to 2, ID 0 and ID 1 have the same function, ID 0 doesn't show the ID serial number) •Location: output port screen switching, work with numeric keys 1~9: •Press to set to location switching mode, and then you can directly press any numeric key to increment the output screen index, and press again to exit the location switching mode Package included: •1 x 3X3 TV Wall Controller •1 x Power Adapter •1 x Remote •1 x English and Chinese Manual •1 x RS232 Cable •Other items not included