Mini RS-232 To RS-485/422 Converter Model UT-203A

The UT-203A Mini RS-232 to RS-485/422 Converter is designed to convert standard RS-232 serial signals into RS-485 or RS-422 differential communication for long distance and industrial applications. It enables reliable data transmission up to 1200 meters while maintaining strong noise immunity and signal stability.

This converter is self powered from the RS-232 interface and requires no external power supply. It features automatic send and receive switching, ensuring seamless half duplex or full duplex communication. The compact industrial grade design makes it suitable for PLC systems, Modbus RTU networks, automation equipment, and embedded serial communication systems.

KEY FEATURES

• Converts RS-232 to RS-485 and RS-422
• Supports transmission distance up to 1200m
• No external power required self powered
• Automatic send receive switching
• Strong anti interference and noise immunity
• Industrial grade stable performance
• Compact and lightweight design
• Easy terminal wiring

SPECIFICATIONS

• Model - UT-203A
• Input Interface - RS-232
• Output Interface - RS-485 and RS-422
• Transmission Distance - Up to 1200m
• Communication Mode - Half duplex RS-485 and full duplex RS-422
• Power Supply - Self powered from RS-232 port
• Application - Industrial serial communication

INTERFACES

• DB9 RS-232 Port - Connect to host device
• RS-485 A and B - Differential half duplex output
• RS-422 TX+ TX- RX+ RX- - Full duplex output
• GND - Ground reference connection