• Login
Limited Lifetime Warranty

BB-485SD9RJ ULI-226J - RS-232 (DB9 Female) to RS-485 2-Wire (RJ 11) Converter

  • Extend RS-232 data signals up to 1.2 km (4,000 ft)
  • Change RS-232 TD and RD to RS-485 signals
  • Automatic Send Data Control - no software drivers necessary
  • Baud rates up to 115.2 kbps
  • Powered from RS-232 handshake lines - no power supply required
Certifications CE FCC RoHS

Add to Cart Buy Now

More Description

This port-powered, two channel converter allows your computer to communicate longer distances by converting TD and RD RS-232 lines to RS-485 signals. RS-485 also provides multi-drop capability. Model 485SD9RJ features Automatic Send Data Control which enables the driver when data is present on the RS-232 side. Control of the driver is automatic at speeds up to 115.2 kbps. The converter is powered from the RS-232 data and handshake lines whether the lines are high or low. No handshake line change is necessary to control the data lines. The RS-485 driver is enabled with each bit of data. The RS-485 receiver is disabled when the driver is enabled and is enabled when the driver is disabled. This converter is suitable for field service, where a power supply would add clutter, or anywhere you need compact, easy-to-use, economically priced serial conversion.

Accessory Products



ULI-226J - RS-232 (DB9 Female) to RS-485 2-Wire (RJ 11) Converter

Accessory Products

  • Serial Cable, RS-232 DB9 M to DB9 F, 1.8 m / 6 ft



Products + {{numOfSelectedRelatedProducts}}Accessory Products

Subtotal {{subTotalStr}}

Extended Specifications


  • Temperature 0 to 70C
  • Serial Type RS-485
  • RS-232 Connector DB9 Female
  • RS-422/485 Connector RJ-11
Office Locations


Monday-Friday, 7am-5pm CST

Contact Advantech