Features: This GPIO expansion board offes broad compatibility for Raspberry 4B, 3B, providing GPIO pins for seamless connection to sensors, module, and displays. Featuring clear pin labeling for easy identification, a compact miniature design for space efficiency, and durability PCB and ABS construction ensuring reliability performances. Ideal for students, beginners, educators, and professional developers seeking an accessible tool for learning electronics, programming projects. Perfect for desktop setups, laboratory experiments, creations, and educational environments where additional GPIO connection enhances project flexibility. With its open design facilitating easy soldering and customization, this GPIO accessory empowers creativity and efficiency in diverse electronics applications. Specifications: Component: PCB, ABS Size:Approx.64x22mm/2.52x0.87inch Pin type: GPIO pin for Raspberry 4B/3B Applicable scenario:Education and Learning,Prototype development,smart home, Package Includes: 1pc GPIO Expansion Board note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.