It's a low-footprint, minimal system development board powered by the latest ESP-WROOM-32 module and can be easily inserted into a solderless breadboard.

The ESP32-DevKitC contains the entire basic support circuitry for the ESP-WROOM-32, including the USB-UART bridge, reset- and boot-mode buttons, LDO regulator and a micro-USB connector. Every important GPIO is available to the developer.

Features

• Small volume, easily embeded to other products
• Strong function with support LWIP Protocol, Freertos
• Suppporting three modes :  AP, STA, and AP+STA
• Supporting Lua program, easily to develop
• Includes CP2102 USB-UART bridge

Downloads:

ESP32_Datasheet