All electronics ship with US style plugs.You may need a voltage converter or a plug adapter.
Special Features
ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
Full I/O port and Wireless 802.11 supported, direct download no need to reset
compatible for Arduino compatible, works great with the latest for Arduino
ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime.