Description The D1 mini Pro is a mini wifi board based on ESP-8266EX. Key Factors: Upgrade to use CP2104 USB-TTL and 16MB flash. Due to chip limitation, using new chinese CH9102 chip now. Fully same performance 16M bytes(128M bit) Flash Antenna available in built-in ceramic antenna or external antenna connector. Features: Microcontroller ESP-8266EX, clock Speed 80MHz/160MHz 11x digital input/output pins Interrupt/pwm/I2C/one-wire 1x analog input(3.2V max input) Extra antenna please order alone in the store On Board operating Voltage 3.3V Same size as D1 mini, but more lightweight Length 34.2mm, Width 25.6mm, Weight 2.5g Documentation please see on this page.
