The dual-channel Modbus network relay module is equipped with a mature and stable 32-bit MCU and a W5500 network chip featuring a full hardware TCP/IP protocol stack. A dedicated MCU debugging interface is provided to support secondary development. Utilizing the standard Modbus RTU communication protocol, the module enables the control of two relay outputs within a local area network (LAN) and is suitable for power control applications in wired network environments. Features an onboard, mature, and stable 32-bit MCU: the STM32F103C6T6 chip; The module's IP address can be viewed via the serial port; the UART communication baud rate is 115200. 1. Main MCU: STM32F103C6T6; 2. Network Chip: W5500 Ethernet chip with full hardware TCP/IP protocol stack; 3. Network Interface: 10M/100Mbps (HR911105A Network Transformer); Color: As Shown Material: PCB Package Contents: 1*Relay Module 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.