The ESP32-D0WD-V3 is an RF System on a Chip (SoC) SMD IC WiFi Dual Core BT Combo manufactured by Espressif. It is a powerful, low-cost, Wi-Fi and Bluetooth SoC module featuring 2.4GHz Wi-Fi 802.11 b/g/n/e/i, dual-mode Bluetooth 4.2/4.0 (BLE/BR/EDR) and built-in 520K byte SRAM. It is designed to be used in a variety of applications such as intelligent home automation, building automation, LED lighting, medical, automotive, smart power, and other IoT IP security applications. It is equipped with integrated high-speed data rates support IEEE 802.11n and other related protocols that ensure high data rates for long distances and low power consumption. The module also supports a wide range of operating system environments such as ESC/ESM, FreeRTOS, ATE, and more. Additionally, it also features external Flash/SRAM, multiple UARTs, SPI, I2C, I2S, PWM, and ADCs to facilitate a wide range of applications.