This ESP8266/ ESP-12F Module/ Serial WIFI Witty Cloud Development Board + MINI nodeMCU is a cloud intelligent hardware development kit, the history of the most simple and most cost-effective IoT development board, don’t need you to understand the knowledge of the network, the TCP/IP another complexes, as long as you will C language, can use EMC’s with cloud SDK quickly realize the secondary development, the DEMO board can use mobile phone flow control panel mount RGB colorful lights, mobile terminal APP, can display environment brightness by photosensitive resistance, less code as long as the modification for half an hour can make your own remote control equipment, system generates free APP (Android, IOS), open the SDK.||Supports 3 modes: AP,STA,AP+STA;Dimensions: 24mm x 16mm;Micro USB connection for power and/or programming