USB to RS232/ RS422/ RS485 (isolated)

The Milestone UD-2535U is an isolated USB to serial converter that connects RS232, RS422 and RS485 devices to a computer through a standard USB port. Designed for professional and industrial use, it provides reliable serial communication between modern PCs and legacy automation, instrumentation and security equipment. The built-in galvanic isolation protects the host system from electrical surges, ground loops and noise commonly found in industrial environments, making it a dependable choice for long-running and safety-critical installations.

Key Features
• Supports RS232, RS422 and RS485 serial communication standards on a single compact converter
• Galvanic isolation protects the connected PC and serial devices from surges, ground loops and electrical noise
• Simple plug-and-play USB connection with no need for an internal card slot
• Compact and rugged design suited to field use and industrial workbenches
• Works with a wide range of serial peripherals including POS, industrial control, instrumentation and access-control equipment
• Milestone quality and reliable long-term performance for B2B deployments

Applications
• Industrial automation and PLC programming and diagnostics
• Connecting POS terminals, barcode scanners and card readers to PCs
• Interfacing CCTV, access control and security panels with serial control
• Field service, instrumentation and test equipment communication
• Legacy RS232, RS422 and RS485 machinery and controller links

Summary
The Milestone UD-2535U is a professional-grade isolated USB to serial converter that brings RS232, RS422 and RS485 devices together with modern computers. With built-in isolation for dependable industrial communication and effortless USB connectivity, it is a practical, long-lasting solution for integrators, service engineers and system houses.