What's in the box:

4K 3x3 HDMI TV Video Wall Controller Screen Stitching Processor TV Display Video Controller Wall Splicing Controller US Plug (Black)

Features:
Multiple Splicing Modes
Support multiple screen splicing modes, including 4x2, 4x1, 3x3, 3x2, 3x1, 2x4, 2x3, 2x2, 2x1, 1x2, 1x3, 1x4, with seamless mixing.
Support 90 Screen Rotation
The screen can be rotated 90 according to the requirements of the scene, just set it on the PC to rotate the image.
Optimum Resolution
The optimal resolution of the output image can be automatically calculated and transmitted to the display screen.
Easy Operation
Plug and play, easy to operate.
Good Heat Dissipation Effect
Adopt multi-hole design for better heat dissipation.

Specification:
Type: 3x3 TV wall controller
Model: NK-BT88
Input resolution: Up to 3840*2160@60Hz(4K@60Hz)
Output resolution: 1920*1080
Power supply: 12V/2A
Item size: 34 * 12.5 * 4.5cm /13.39 * 4.92 * 1.77in
Item weight: Approx. 859g /30.3oz

Packing list:
1 * Video wall controller
1 * Power adapter
1 * Remote control
1 * User manual