ESP8266 WIFI Shield
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ESP8266 is a ultra-low power UART-WiFi module. It has excellent dimensions and ULP technology compared to other similar modules. The module is special designed for mobile devices and Internet of Things (IoT).
This WiFi Shield based on ESP-12F, which is the new version of the ESP-12 with the Wifi chip ESP8266. With this Shield, you can make you Arduino easy to connect to network and control you device anywhere. Just communication via UART interface and control by AT command.