The ESP-WROOM-02D(4MB) with WIFI Modules Module RoHS is a module manufactured by Espressif that integrates a microcontroller and wireless communication technology into a single package. The microcontroller is a 32-bit Tensilica® Xtensa® LX6 microprocessor with up to 160MHz clock frequency and 4MB flash memory. The module is capable of both 2.4GHz and 5GHz wireless communication standards, including support for Wi-Fi® 802.11b/g/n, making it suitable for applications that require robust wireless connectivity. Additionally, the module is RoHS compliant, meaning that it meets all applicable environmental requirements for electronics.