HLK-RM08S is a low-cost embedded UART-ETH-WIFI (serial port - Ethernet - wireless network) module newly launched by Hi-Link Electronics. This product is an embedded module that complies with network standards based on a universal serial interface. It has a built-in TCP/IP protocol stack and can realize the conversion between the user's serial port, Ethernet, and wireless network (WIFI) 3 interfaces. Through the module, traditional serial port devices can transmit their own data through the Internet without changing any configuration. Provide a complete and fast solution for users' serial port devices to transmit data over the network.