Features: Brand new and high quality Powerful function: the driving board integrates ESP32 chip and electronic ink screen driving function, and has wireless networking and display function. High compatibility: Support various types of electronic ink screens, and meet the display requirements of different sizes and resolutions. Flexibility and Customizability: Personalized settings and customized functions can be programmed to meet the needs of various application scenarios. ESP32 chip: equipped with powerful ESP32 chip, it has stable wireless networking connection and rich communication interfaces.Electronic ink screen driver: Built-in electronic ink screen driver module supports displaying text, images and other content. Software development support: provide development tools and software libraries to facilitate users to program and develop driver board. Specifications: Material:PCB Size:Approx.48.25x29.46mm/1.89x1.16inch Package Includes: 1 Set Driver Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.