The Espressif ESP32-C3-WROOM-02U is a Wi-Fi + Bluetooth 5 LE module with a single-core 32-bit RISC-V processor up to 160 MHz, 4 MB SPI flash, and an external U.FL antenna connector for flexible RF design. Supporting UART, SPI, I²C, I²S, USB, and hardware security features like secure boot and encryption, it is ideal for IoT, smart home, healthcare, and industrial automation applications.