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 is integrated with TCP/IP protocol stack, users can use it easily to complete the networking function of embedded devices, save manpower, material resources, and development cycle in the development process so that the product can be put into the market faster, enhance competitiveness. The width of Embedded Ethernet module USR-K5 is the same as the ordinary RJ45, 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: PCB Package Contents: 1 x TTL UART network port 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.