Features: This GPIO expansion board offer seamless for 5, 4B, 3B+, and models, featuring double row pin headers for flexible peripherals connection in various electronics projects. Engineered with ABS materials and toolless plugs and play design, its structure ensures stable signals transmission while eliminating soldering requirements for effortless installation. for enthusiasts, IoTs developers, and electronics educators seeking GPIO interfaces expansion solution for prototyping and hardware experimentation. Perfectly suited for robotics controls systems, home automation setups, and sensors driven applications where space efficient accessories enhances project scalability. The innovative pin layout configuration minimizes signals interferences while maintaining full GPIO functionality, making it essential GPIO adapter for professional electronics development. Specifications: Materials: ABS Size: 52x13mm Weight: 10g Working temperature: -45-85℃ Type: Not welded, double row seats, double row bent needle, double row bent seats(optional) Package Includes: 1PC GPIO interfaces Adapter Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.