Item Type: Video Wall Controller Material: Iron Remote Control Battery: 2 x AAA Batteries (not included) Power Supply: 12V/1A Splicing Mode: 2x2 splicing, 1x2 splicing, 2x1 splicing, 1x3 splicing, 1x4 splicing, 4x1 splicing, 3x1 splicing. Package List 1 x Image Processer 1 x Power Supply Adaptor 1 x Manual 1 x Remote Controller Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1It supports 1HD Multimedia Interface input and 4 outputs of this type, which combines 4 video display units into a large dynamic image screen. 2Simple operating procedures, porous convection heat dissipation design and non-slip design are good reasons for you to choose it. 3It supports splicing modes like 2x2 splicing, 1x2 splicing, 2x1 splicing, 1x3 splicing, 1x4 splicing, 4x1 splicing, 3x1 splicing 4Neither the 5 transmitters nor the receiver box require a power source and no additional software or internet connection is required. 5This video wall controller is of wide compatibility, thus it supports any TV as long as it is equipped with a HD input.