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RS-232 to RS-485 2-Wire / 4-Wire

US Prices
CDN Prices

Privacy and Security Policy

General Product Information

These port-powered converters change TD and RD RS-232 lines to RS-485 signals. All are port powered and feature Automatic Send Data Control. SDC automatically enables the RS-485 driver when data is present on the RS-232 side. Control of the driver is automatic at rates up to 115.2 kbps.

Features and Details

  • Converts RS-232 to RS-485 2-Wire Half Duplex, or 4-Wire Full Duplex 
  • DB9 Female on RS-232 Side, 2 RJ-11 Connectors on the RS-485 Side - Great for Multidrop Connections 
  • Draws power from RS-232 Handshake Lines - Handshake Lines must be present to power the converter
  • Data Rates Up to 115 kbps
  • FCC Class B
  • CE


Power Range AC: 0 to 0 Temp Range: 0 to 70
Mounting / Packaging: In Line UL: No
Class 1 Division 2: No Modbus: Yes
Automatic Send Data Control: Yes Power Range DC: 5 to 5
Power Source: Port Power Max AC: No
RS-232: No RS-422: No
RS-485 2 Wire: Yes RS-485 4 Wire: Yes
TTL: No Current Loop: No
Multi-mode Fiber: No Single Mode Fiber: No
Isolation: No 3-Way Isolation: No
Brand: B&B Electronics    

Buy 485DRJ on-line:
USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1280
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027