The Espressif ESP32-S2-WROOM-I-N4 is a Wi-Fi MCU module built on the single-core 32-bit Xtensa LX7 processor running up to 240 MHz, with 4 MB SPI flash and 320 KB SRAM. Supporting 2.4 GHz Wi-Fi only, it features an external antenna connector, strong security functions (secure boot, flash encryption, AES/SHA/RSA), USB OTG, and a wide range of interfaces for versatile IoT designs.