ITEM NAME:ESP8266 Witty Cloud Development Board ESP12F Module C3A3 ESP8266 Witty Cloud Development Board ESP12F Module C3A3 The ESP-12 module is one of the most complete module in the ESP family. It allows you to use the biggest amount of pins of all of them. You can program this module to work stand alone with the Arduino IDE or with LUA as NodeMCU. This is an intelligent hardware development kit, which support for the cloud. This is the most cost-effective Internet of Things development board, you do not need to understand the network, TCP / IP and other complex knowledge, as long as you understand C language, you can use it to achieve secondary development. This DEMO board can use the mobile phone traffic control onboard RGB colorful lights, APP, the ambient brightness can be displayed by a photoresistor. Just make a slight change to the code, you can make a telecontrol device of your own. Supports 3 modes: AP,STA,AP+STA LDR Lignt Sensor on board WS2812 Led on board size:30*30*10mm/1.18*1.18*0.39 inch material;metal colour:black Package include:1 * Witty Cloud Development Board Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.