The OKY2202-1 is a shield, expansion board designed and manufactured by OKYSTAR. It's specifically designed to offer support to the ARDUINO MEGA2560 microcontroller and expand its capabilities. It offers the user additional inputs and outputs, allowing for more features than the ARDUINO board offers in its native form. With this expansion board in place, users are able to add various sensors, buttons, displays, serial ports, and more. The OKY2202-1 is also equipped with a power supply module, a battery port, and a reset button. Users can customize and program the board, allowing for custom applications and customized user interfaces.