The OKY2235-1 is an electronic prototyping module by OKYSTAR that is designed to use with an Arduino development board. It features a shield form factor and a single board prototype system. The board is designed to support multiple expansion modules such as sensors and displays. It has a size of 3.0" x 2.0" and can be connected to a controller board via the male-female DuPont cables. It is compatible with the Arduino Uno, Leonardo, Nano, and Mega boards and offers a comprehensive range of input and output control. It has power supply pins, I2C ports, TTL level communication pins, relays, and analog and digital ports. Its main application is in DIY electronics projects.