The ESP32-U4WDH with RF System on a Chip (SoC) is a SMD IC WiFi Single Core BT Combo manufactured by Espressif that combines Bluetooth and Wi-Fi wireless capabilities with a microcontroller for low power and small form factor applications. It is designed with a broad range of features including a high-performance 32-bit processor, embedded flash, security coprocessor, Wi-Fi, Bluetooth, and robust power-saving modes. The device is ideal for applications ranging from consumer home automation to IoT development and more. It contians a built-in 2.4GHz Wi-Fi radio with support for 802.11b/g/n and 802.11e. It also has Bluetooth Classic and Bluetooth Low Energy (BLE) connectivity, and supports multiple modes including station and AP modes. The SoC is designed to provide a high level of integration, low power consumption, and small form factor with additional features such as low-power snapshot mode. It also has an integrated security coprocessor and secure boot ensuring a high level of protection against external threats.