ITEM NAME:D1 Mini NodeMcu Lua WIFI Internet of Things Development Board Based ESP8266 #JT1 Product Description Description: D1 Mini NodeMcu Lua WIFI Module Internet of Things Development Board Based ESP8266 Built-in PCB Antenna Feature: 1. Node Mcu development board based on for Lexin esp8266, with GPIO, PWM, I2C, 1-Wire, ADC and other functions, combined with Node Mcu firmware for your prototype development provides the fastest way. 2. Contains USB serial port, plug and play. 3. 10 GPIO, each can be configured as PWM, I2C, 1-wire. 4. FCC certified WI-FI module with built-in PCB antenna. Specification: Size: 35*25*5mm/1.37*0.98*0.19'' Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 x Development Board.FCC certified WI-FI module with built-in PCB antenna. Contains USB serial port, plug and play. Due to the different display and different light, the picture may not show the actual color of the item.