Jinan USR Iot Technology Limited is based in China and lists industrial networking and Internet peripheral devices on Global Trade Plaza. Specific models listed include the USR-N540, USR-TCP232-419 and USR-N520 serial-to-Ethernet converters. The serial-to-Ethernet converters such as the USR-N540 and USR-N520 are designed for industrial temperature ranges from -40 °C to 85 °C and provide features such as Modbus RTU-to-TCP gateway functionality, web-socket support, virtual serial port software (USR-VCOM) and multiple work modes including TCP server, TCP client, UDP and HTTPD client. These devices incorporate Cortex-M4 processors with integrated TCP/IP protocol stacks, auto-MDI/MDIX RJ45 ports at 10/100 Mbps, and built-in protection such as ESD and surge protection. Buyers can send an enquiry through Global Trade Plaza.