Specification: Origin: Mainland China Type: Module Condition: New PCB material: high-quality FR-4 material PCB layers: 2 layers PCB thickness: 1.6mm Product size: 85.00x74.00x11.00mm Product size: 3.35x2.91x0.43inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Expansion Board Module 1. Highly Reliable Expansion Board Module: Our expansion board module is designed with safety and reliability in mind, making it a perfect choice for extending to various applications. Its robust construction ensures your projects are built on aa dependable foundation. 2. Dual-Layer GPIO Breakout Board Design: Featuring a double-layer design with pin headers on both sides, our GPIO breakout board offers enhanced connectivity for your projects. This layout provides ample space for all your connections, ensuring a neat and organized setup. 3. Stable and Durable GPIO IoT Development Board: Experience unparalleled stability and high reliability with our GPIO IoT development board. It's engineered to support your most demanding IoT projects, providing a solid platform for innovation and development. 4. Versatile Expansion Board for ESP32-S3: Our expansion board is an invaluable tool for projects requiring the use of all pins on for ESP32-S3 board. It efficiently expands one GPIO pin into two, doubling your connectivity options and making it an excellent choice for maximizing pin usage. 5. Handy Expansion Module for Repeated Pin Use: The expansion module is specifically designed for projects that necessitate the repeated use of all pins. It's an ideal tool for developers looking to leverage the full potential of their for ESP32-S3 board, ensuring no pin goes unused.