KNACRO 2.2-inch Arduino module LCD color screen TFT SPI serial interface module, support UNO, R3 development board Support all kinds of Arduino microcontroller line, without any wiring. The integrated voltage regulator IC, supports 5V or 3.3V power supply On-board level translation programs truly perfectly compatible 5V / 3.3V IO level, supports a variety of single-chip IO connection. The integrated backlight control circuit, can be controlled on-off or PWM dimming. The integrated SD card expansion circuitReserved SPI FLASH font circuits to facilitate the expansion application.