1. Powerful performance: The ESP32 expansion board has a built-in powerful dual-core 32-bit processor, which supports Wi-Fi and bluetooth functions, allowing you to build Internet of Things projects conveniently and quickly. 2. Easy to develop: It is suitable for many development environments and languages, and can be downloaded through the Micro-USB interface, which is very convenient. 3. Rich hardware resources: It is equipped with quite rich hardware interface resources, which can connect many sensors and other components, basically meeting your various needs in the project. 4. Small and portable: ESP32 expansion board is small in size and easy to carry. It can be easily integrated into various devices and can be easily handled in scientific research projects and daily innovation practices. Main Control Chip: Support ESP32-DOWDQ6-V3 dual-core 32bit MCU integrated WiFi, Bluetooth-compatible USB Driver Chip: CH340C, with good system compatibility, higher-download speed, and more stability Support VIN-external wide voltage - input 5-12V power supply (battery version maximum 5.5V input) Support USB power supply, external 3.3V power supply, and VIN-power supply three kinds of power supply Mode-development board Compatible with for Arduino IDE mixly, mind+, Python- and other programming software ESP32 CP2102 30pins Works perfectly with for Arduino IDE and Ultra-Low power consumption Colour:Black Material:Plastic Package Contents: 5 x Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.