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Black Box

Black Box IC820A Universal RS-232 to RS-422/485 Bidirectional Converter

$162.42
$142.97 SAVE $19.45
2 availableas of 08/29/2026

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Should arrive by Thu, Oct 1 with free ground shipping

Compliance, certifications and origin

  • TAA compliant
  • Origin: United States
Rated excellent by our customers Read our reviews

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

  • Enables you to select RS-485 2-wire half-duplex or RS-485 4-wire full-duplex operation.
  • Selectable RS-422 operation with transmit and receive always enabled.
  • Automatic RS-485 driver control, so it works without any special programming for handshaking signals. Also enables transmitter from RS-232 TD signal and receiver when not transmitting.
  • Built-in bridging switches for 2- or 4-wire operation with no external jumpers to set.
  • Set operating mode with four switches.
  • Converts using either port power or power from an external 120-VAC/12-VDC power supply (sold separately).
  • No external power is required if two RS-232 output handshake lines are available.

Technical specifications

General Information

Manufacturer Black Box Corporation
Manufacturer Part Number IC820A
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Model IC820A
Product Name IC820A Universal RS-232 to RS-422/485 Bidirectional Converter
Product Type Transceiver/Media Converter

Interfaces/Ports

Total Number of Ports 2

Power Description

Power Source Power Supply
Plug / Connector Type Terminal Block

Physical Characteristics

Form Factor External

Miscellaneous

Green Compliant Yes
Country of Origin United States
TAA Compliant Yes

Warranty

Limited Warranty 5 Year

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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.