ULI-314DC – USB to RS-232/422/485 Isolated Converter by Advantech

The Advantech ULI-314DC USB to RS-232/422/485 Isolated Converter is a professional-grade solution designed to expand PC connectivity with four isolated serial ports in demanding industrial applications. This versatile converter supports multiple serial protocols including RS-232, RS-422 4-wire, and RS-485 in both 2-wire and 4-wire configurations, making it suitable for a wide range of legacy and modern industrial equipment integration scenarios. The device features comprehensive 2 kV port-to-port isolation that creates complete electrical separation between the upstream PC and all connected downstream serial devices, as well as isolation between each of the four serial ports themselves. This protection architecture prevents ground loops and protects sensitive equipment from electrical disturbances common in industrial environments. Built to withstand harsh conditions, the ULI-314DC incorporates a rugged IP30-rated metal enclosure with both DIN rail and panel mounting options, enabling flexible installation in control cabinets and industrial settings. The high-retention USB Type B port provides a secure 15N pull force connection that resists accidental disconnection from vibration or cable strain. With ESD protection rated at 15 kV air discharge and 8 kV contact discharge, plus surge protection of ±1 kV on signal ports, the device delivers exceptional reliability. The wide operating temperature range of -40 to +85°C and UL Class 1/Division 2 certification make it ideal for deployment in extreme environments and hazardous locations. Supporting Modbus protocol and featuring LED indicators for TD, RD, and PWR status, the converter integrates seamlessly into industrial automation and control systems. Available from Recab, your Nordic partner for Advantech industrial data communication solutions.