ESP8266 Chip Integration:Features the ESP8266 ESP-12E chip for seamless WiFi connectivity, ideal for IoT projects. for R3 Compatibility:Designed to work with for R3, enhancing your microcontroller projects with ease. Tiny for Board Design:Compact and , this tiny for board fits perfectly in your IoT development kit. UART Interface:Equipped with a UART interface, simplifying communication between the board and other components. Versatile IoT Development Kit:An essential component for board projects, enabling diverse IoT applications. Color: As Shown Material: PCB Package Contents: 6 x Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.