ITEM NAME:WiFi UNO development board based on ESP8266 direct use IDE Description: This is a Q98 WeMos D1 WiFi UNO development board. The maximum input voltage is 24V. You can develop it directly from the IDE. Based on esp-8266ex compatibility, you can use the IDE to program. Its input range 0-3.3v supports OTA wireless upload. On board switching power supply -- Max 24V input, 5V 1A output. Specification: Size(LxW): approx. 69x53x12mm/2.72x2.09x0.47inch. Package Includes: 1 Piece UNO Development Board..You can develop it directly from the IDE. Based on esp-8266ex compatibility, you can use the IDE to program. People always bought together with.