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485sd9rj b&b logo

Port Powered RS-232 to RS-485 Converter

US Prices
CDN Prices

Privacy and Security Policy

General Product Information

The 485SD9RJ is a port-powered converter that changes TD and RD RS-232 lines to balanced half-duplex, two wire RS-485 signals. Send Data Control 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 115.2kbps baud. The 485SD9RJ has a DB9 female connector on the RS-232 side. On the RS-485 side, the 485SD9RJ has an RJ11 connector.

Features and Details

  • DB9 Female Connector for RS-232
  • RJ-11 Connector for RS-485
  • Port Powered from RS-232 RTS, CTS, DTR and DSR
  • 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: No
TTL: No Current Loop: No
Multi-mode Fiber: No Single Mode Fiber: No
Isolation: No 3-Way Isolation: No
Brand: B&B Electronics    

Buy 485SD9RJ on-line:
USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1364
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