Cost-effective TTL UART to Ethernet module for bi-directional data transmission between UART and Ethernet. Integrated TCP/IP protocol stack for easy networking of embedded devices. Compact size with the same width as a standard RJ45 connector. Successfully tested in complex network environments such as banks and highways. Designed to save manpower, material resources, and development cycles, enhancing product competitiveness. USR-K5 is a cost-effective TTL UART to Ethernet module with tiny size that can realize the bi-directional transmission between UART and Ethernet. USR-K5 is used for data transmission between TCP/UDP packets and the UART interface. USR-K5 has been rigorously tested and has been successfully applied in banks, highways, large corporate networks, and complex network environments such as fiber-to-Ethernet. Color: As Shown Material: Metal Package Contents: 1*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.