1.ESP8266 CH340 chip, power your development in the fastest way combinating with NodeMcu Firmware; It's a IOT unit with all available resources on board, support smart link and smart networking. 2.Nodemcu Lua Lolin V3 ESP8266 development board is equipped with powerful ESP6266 microcontroller (ESP-12E) with 802.11 b / g / n WLAN and integrated 25dBm antenna. This development board consists of two more microcontroller: flash memory chip is 25Q32 4M (32mbit) and serial chip is upgraded CH340 chip. 3.This wifi development board enables you comfortable prototyping by simple programming via Lua-Script or for code and breadboard-optimized construction (23 mm pin spacing). 4.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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.