WiFi module: A wireless module with built-in wireless network protocol IEEE802.11b.g.n.ac.ax (wifi4/5/6) protocol stack and TCP/IP protocol stack, belonging to the IoT transmission layer. Its function is to convert the serial port or TTL level into an embedded module that complies with Wi Fi wireless network communication standards. There are several communication interfaces for WiFi modules: USB, WAN/LAN, UART, I2S, I2C, SPI, SD, PWM.

Based on the rapid popularity of home WiFi routers and smartphones, the WiFi protocol has also been widely used in the field of smart homes. At present, WiFi technology has become the preferred solution for IoT device connectivity due to its fast, durable, and stable connectivity characteristics. Among them, the IoT WiFi module has also become the preferred wireless module for IoT products.

Data transparent transmission, as the name suggests, refers to the transparent transmission of data. Transparent transmission refers to the process of data transmission where the length and content of the sender and receiver data are completely consistent, without the need for any processing of the data. It is equivalent to a data line or serial port line, ensuring the quality of transmission without processing the transmitted business. The serial WiFi module transmits the received temperature and humidity data to the cloud server in a complete manner, making it easy for networked devices to call and analyze data.

The serial WiFi module works in both STA mode and AP mode. When working in STA mode, the intelligent terminal and WiFi module work in the wireless network environment provided by the wireless router, and the data signal is forwarded by the wireless router to achieve wireless control; Working in AP mode, smart terminals (mobile phones, tablets) directly connect to the network provided by the WiFi module, and achieve wireless control on the same hotspot network; Real time support for the connectivity and automation of industrial IoT.