This is a powerful IoT development board, with a 16MB flash, an external antenna connector and a built-in ceramic antenna based on ESP-8266. Same size as D1 mini, but more light. D1 Mini PRO development board is compatible with Arduino, Micro Python, NodeMCU. And can be programmed in the Arduino IDE. New CP2104 USB-TO-UART IC, built-in ceramic antenna or external antenna PCB antenna. 11 digital input / output pins, all pins have interrupt / PWM / I2C / 1-wire; 1 analog input(3.2V max input); 16M bytes(128M bit) Flash and a micro-USB connection.

Specifications :

• Product - D1 Mini PRO Development Board 
• Memory Storage - 16MB
• Connectivity - Wi-Fi
• Operating Voltage - 3.3-5V DC
• Digital I/O Pins - 11
• Clock Speed - 80MHz/160MHz 
• Interrupt/PWM/I2C/one-wire
• External antenna connector
• Built-in ceramic antenna
• New CP2104 USB-TO-UART IC

Features :

• 1 digital input/output pins
• Interrupt/PWM/I2C/one-wire
• 1 analog input(3.2V max input)
• 16M bytes(128M bit) Flash
• External antenna connector
• Built-in ceramic antenna
• New CP2104 USB-TO-UART IC
• Same size as the D1 mini, but more light

Package Include :

1 x D1 Mini PRO Development Board ESP8266 CP2104 16M Bytes External Antenna Connector ESP8266 WiFi IoT Board