D1 Mini Pro Board with 16 MB flash memory and ESP32-WROOM-32 chipset. The board can be programmed with Arduino IDE, has the CP2104 USB chipset and enables the quick and easy creation of IoT devices. Technical specifications - ESP-32-WROOM - 3.3 V operating voltage - 5 V input voltage (USB) - 11 digital input pins - 1 analog input (max. 3.2 V) - 16 MB Flash - 80/160 MHz clock frequency - 32 bit CPU - onBoard WiFi antenna - USB-C connector - CP2104 UART - USB converter