ESP8266 ESP12 NodeMcu Lua WeMos D1 Mini WiFi Develop Kit Development Board TE441
Open Tools→Board:xxx→Boards Manager and install esp8266 by ESP8266. A great set of tools to develop ESP8266. ESP8266 has I/O Pin. D1 mini, it is a mini NodeMcu Lua WiFi board based on ESP-8266EX. 1x Mini NodeMCU Lua Wifi Wireless Module.