Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ PCB material: high quality FR-4 material _x005f_x000D_ Number of PCB layers: 2 layers _x005f_x000D_ PCB thickness: 1.6mm _x005f_x000D_ Size: 63.00x63.00x11.00mm/2.48x2.48x0.43inch _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ 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! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x ESP8266 Breakout Board 1.Versatile and Reliable: The breakout board is a safe and reliable platform that can be expanded to accommodate various applications. Its flexibility allows users to adapt and integrate it into different projects, ensuring optimal functionality and performance. 2.Dual-layer Design: The expansion board features a dual-layer design with pin connections on both sides. This design maximizes the board's connectivity options, allowing users to easily connect and interface with other components, modules, or devices. 3.Stable and High-Quality: The breakout expansion board offers excellent stability and high reliability. It is built to withstand rigorous usage and maintain consistent performance over time, ensuring that users can rely on it for their projects without any concerns. 4.Complete Compatibility: The terminal screw board is fully compatible with the ESP8266 ESP-12E development board. This compatibility ensures seamless integration and easy interchangeability, allowing users to leverage the full potential of their ESP8266 board without any compatibility issues. 5.Convenient Pin Expansion: The ESP8266 expansion board terminal adapter enables the expansion of GPIO pins on the development board. By providing an additional 2 GPIO pins, it greatly facilitates users in reusing and extending the available pins, making it easier to connect and control multiple devices or components simultaneously.