Equipped with Xtensa 32-bit LX7 dual-core processor, up to 240MHz main frequency. Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE). Built in 512KB of SRAM and 384KB ROM, onboard 4MB Flash memory and 2MB PSRAM. Castellated module and onboard ceramic antenna, allows soldering direct to carrier boards. Supports flexible clock, module power supply independent setting, and other controls to realize low power consumption in different scenarios. Integrated with USB serial port full-speed controller, 24x GPIO pins allows flexibly configuring pin functions.