The main body of the module is ESP32 module, and the peripheral uses the USB serial port chip CP2102 to expand the micro USB interface, which can be directly debugged by a USB connected computer, and the data transmission is fast and stable. It has power indicator and working status indicator on it, so you can know the status of the module at any time. There are two touch buttons, one is reset, the other is enable module to enter the halberd program mode. In addition, the pins on both sides of the development board are convenient for developers to connect and use. The module has powerful Bluetooth-compatible and WiFi functions. As a Bluetooth-compatible and WiFi development board, it can obtain rich resources from official websites. The module supports for NodeMCU and other development environments, which expands the range of its resources available and greatly improves the ease of learning and development. Of course, it can also be widely used in Internet of things occasions, such as home automation, wireless industrial control, wireless positioning system signal, etc.