Wide compatibility: suitable for Raspberry Pi 2B/3B/3B+/4B/ZERO and other models (the product does not include the Raspberry Pi motherboard). Concise and clear identification: The pin definition stickers clearly indicate the functions of each pin for correct connection. Industrial terminal design: High-quality industrial terminals ensure stable and reliable connections and are suitable for various application environments. Easy to install: The installation between the expansion board and the Raspberry Pi motherboard is simple and quick, and it is easy to disassemble and replace. Space optimization: The compact design saves space and is easy to integrate into various projects. This for Raspberry Pi industrial terminal GPIO pin expansion board is equipped with pin definition stickers, which is convenient for customers to use industrial terminals for pin expansion. The stickers indicate the functions of each pin, making the connection easier. At the same time, the GPIO DuPont line pins of the for Raspberry Pi are retained. It does not affect the insertion of other modules. [Application scenarios] Automation control system: connect various sensors and actuators to realize data acquisition and equipment control. Internet of Things projects: connect for Raspberry Pi with other hardware devices to realize remote monitoring and control functions. DIY electronic projects: facilitate developers to realize the connection and communication between Raspberry Pi and other electronic components. This product does not include for Raspberry Pi motherboard, does not include for Raspberry Pi 4B. Note:due to different production batches, the appearance printing is different, which does not affect the use. Colour:As Shown Material:Plastic Package Contents: 4 x Expansion Board