Features: The ESP32 expansion board module is secure, for extending to various applications with its compatibility with ESP32S3 or similar pin development boards. from PCB materials, this expansion board offer excellent stability and reliability, featuring integrated components like power management module and LED indicators to prototypes. for IoT developers, students, educators, makers, and enthusiasts seekings flexible and cost effective for embeddeds systems and IoT projects. for home automation, health monitoring, industrial automation, and robotics projects, enabling tasks like intelligent lighting control, sensorings data collection, production line monitoring, and robot pathes planning. Seamlessly integrates, supporting multiple programming languages, making it easiers for developers to use familiar tool and accelerate their development process. Specifications: Materials: PCB Size:79x70mm/3.11x2.75inch Package Includes: 1PC GPIO IoT Development Board note: Please allow 1-3cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.