The ESP32-WROOM-32UC with WIFI Modules RoHS manufactured by Espressif is a low-power, high-performance 2.4 GHz Wi-Fi and dual mode Bluetooth combo chip designed with TSMC Ultra-Low-Power 40 nm technology. It supports 802.11b/g/n (2.4 GHz Wi-Fi) connections with a range of up to 300 m, and also supports dual-mode Bluetooth. It has 32 MByte of external flash with wide-angle Wi-Fi antenna, which can provide higher throughput and longer range than products using internal-flash. It meets the requirements of RoHS (lead-free) standards. In addition, the module integrates a highly integrated crystal detect circuit, so the device has better anti-interference performance and stability.