Item Name:
D1 Mini NodeMcu Lua WLAN WIFI Internet Development Board

Specification:
Main Chip: ESP8266 CH340G.
WIFI Development Board, 4M bytes.
supported (except D0).
Support OTA on line.
1 Micro USB connection.
1 analog input (3.3V max input).
5V 1A switching power supply onboard.
11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire and a micro-USB connection.

How to get it started in for Arduino:
A: Setup driver
Before you use mini D1 boards, you need set up CH340g driver.
B: Python
On Windows you need install Python 2.7.10.
On Linux & MAC OSX, you don't need install it, comes preinstalled with OS.
C: Installing Hardware package "Boards Manager or GIT".

Note:
We recommend that you can use GIT, then always get the latest version.