This NodeMCU ESP8266 WiFi Module features 4MB Flash Memory, CH340 USB Chip, and comes with the Lua Script Firmware.
It is Open-source, Interactive, Programmable, Low cost, Simple, Smart, WiFi enabled.
Supply voltage: 4 to 9V to pin VIN, or 5V USB
Can be programmed using Arduino IDE
Event-driven API for network applications
10 GPIOs, PWM functionality, I2C and SPI communication, 1-Wire and 1 ADC all in one board
80MHz clock speed, 10 times faster than Atmel Atmega328
WiFi networking (access point, client or webserver)
For your Internet Of Things project!
We recommend to download the required USB driver for your operating system from WCH official website.