The ESP32-CAM-MB module can operate independently as the smallest system WIFI + Bluetooth dual-mode development board based on ESP32 design using built-in PCB antenna，with 2 high-performance 32-bit LX6CPUs，using 7-level pipeline architecture，main frequency adjustment range from 80MHz to 240Mhz. Ultra-low power consumption，deep sleep current is as low as 6mA .It is an ultra-small WI-FI + BT / BLE SOC module. ESP32-CAM-MB adopts a Micro USB interface，a convenient and reliable convenient connection method to be applied to various terminal IoT hardware.