This is a new WiFi+Bluetooth dual-mode development board based on ESP32 design. It uses PCB on-board antennas, has 2 high-performance 32-bit LX6CPUs, uses a 7-stage pipeline architecture, and the main frequency adjustment range is 80MHz to 240Mhz ESP32-CAM WiFi Bluetooth board ESP32-CAM-MB -USB serial port CH340G with OV2640 camera module -ESP32-CAM-MB adopts -USB interface, convenient and connection , convenient to apply to IoT hardware terminal occasions. Ultra-low power consumption, deep sleep current as low as 6mA. It is an ultra-small 802.11b/g Wi-Fi + BT/ SoC module Application: device transmission; wireless monitoring; smart agriculture; QR wireless identification; wireless positioning system signal, etc. Material:PC+metal colour:Black Package Contents: 4 x ESP32-CAM Module 4 x Camera Module OV2640 Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.