Features: The CJMCU-3212 Virtual Keyboard 8266 Development Board integrates and WIFI 8266 modules with memory card card storage, offering prototyping capabilities with labeled pins for seamless connectivity. Crafted from plastic, this learning board features for combining WIFI connection, microcontroller functionality, and expandable storage in a pocket sized development tool. Ideal for electronics engineers, developers, and programming enthusiasts seeking solution for wireless communication projects. Perfect for prototyping smart home devices, creating wireless sensory networks, or developing educational coding projects in electronics. Its memory card card slot simplify circuit expansion, while the low power design ensuring operational in application and embedded development. Specifications: Component:Plastic Size:Approx.51.5x21.5mm/2.02x0.84inch Package Includes: 1Pc Development Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.