Power supply: Voltage: 5V.  Current: 2A or more.  Power interface: DC5.5mm.  Note: The power cable is not includes.  Display Description:    1. The display is a new P4 32X64RGB colorful display.  2. The total screen length 255MM, width 125MM, thick 15mm, physical pixels 32X64, point spacing 4MM.  3. Control card CPU: STM32F103C8T6.  4. This item is used for DIY production, no shell packaging (bare screen). Suitable for enthusiasts who has STM32 based, the default has installed the spectrum program, if you need other effects, please download and install program yourself.    Display:   Spectrum display: Through the control card K2, K3 button to set the color of the bar and floating point, after setting the parameters are automatically saved, the brightness is not adjustable.  Bar color: red, green, blue, yellow, purple, green, white.  Floating point color: red, green, blue, yellow, purple, green, white.    Features:   1. Music spectrum.  2. Automatic dimming, changes with the change of ambient brightness, can switch automatic or manual dimming, manual adjustment is ten-speed light).  3. Button sound.  4. Infrared remote control function.    Music spectrum:   A, Cylinder color colorful adjustable.  B, Peak color colorful adjustable.  C, Random color switching or manual switching.    Package includes:    1 x Control board.  1 x Dot matrix screen.  1 x Cable