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B+B SmartWorx

B+B SmartWorx RS-232 to RS-485 Converter

$94.00
$82.68 SAVE $11.32
None availableas of 05/30/2026

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

The RS-232 to RS-485 Converter converts unbalanced, full-duplex RS-232 signals to balanced full-duplex (4-wire), or half-duplex (2-wire) RS-485 signals. RS-485 is an enhanced version of the RS-422 balanced line standard.

The RS-232 port has a female DB25S type of connector with pins 2 (TD input) and 3(RD output) supported. Protective Ground (pin 1) and Signal Ground (pin 7) are also passed through. Pins 4(RTS) and 5(CTS) are tied together. Also pins 6(DSR), 8(CD), and 20(DTR) are tied together, but not passed through the converter. The RS-485 port has a male DB25P type of connector with the Send Data outputs on pins 2 and 14, and Receive Data inputs on pins 3 and 16 or 5 and 17.

Technical specifications

General Information

Manufacturer Advantech Co., Ltd
Manufacturer Part Number 485COSR
Manufacturer Website Address http://www.advantech.com
Brand Name B+B SmartWorx
Product Model 485COSR
Product Name RS-232 to RS-485 Converter
Product Type Data Transfer Adapter

Technical Information

Adapter Type Serial
Connector Type on First End DB-25 RS-232 Serial - Female
Connector on First End Details 1 x 25-pin DB-25 RS-232 Serial Female
Connector Type on Second End DB-25 RS-485 Serial - Male
Connector on Second End Details 1 x 25-pin DB-25 RS-485 Serial Male

Miscellaneous

Certifications & Standards
  • CE
  • EN 50082-1 (IEC 801-2, IEC 801-3, IEC 801-4)
  • EN 50081-1 (EN 55022, IEC 1000-4-2)
  • EN 61000 (-4-2, -4-3, -4-4, -4-5, -4-6, -4-8, -4-11)
  • ENV 50204
  • EN 55024

Warranty

Limited Warranty Lifetime

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Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.