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Black Box

Black Box CL1090A-F Signal Converter

$145.78
$126.94 SAVE $18.84
5 availableas of 09/16/2026

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Should arrive by Thu, Oct 1 with free ground shipping

Country of origin

  • 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

Quick Facts
  • Bidirectional conversion of RS-232 to 20-mA Current Loop.
  • Active or passive operation.
  • Optical isolation.
  • Compact size.

Further Details

The converters can be configured for active or passive Current Loop. In active mode, an async RS-232 device can communicate with a passive 20-mA Current Loop device. In passive mode, an async RS-232 device can communicate with an active 20-mA Current Loop device.

These compact solutions are configured as RS-232 (DCE), but they can be modified for DTE use with an asynchronous modem eliminator (ME212).

Each converter has a Transmit (T+ and T-) and a Receive (R+ and R-) loop. Optical isolators in both the transmit and receive loops keep out electrical interference and eliminate ground loops.

Technical specifications

General Information

Manufacturer Black Box Corporation
Manufacturer Part Number CL1090A-F
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Model CL1090A-F
Product Name RS-232 to Current Loop Converter
Product Type Signal Converter

Interfaces/Ports

Serial Port Yes

Power Description

Input Voltage 12 V DC

Miscellaneous

Country of Origin United States

Warranty

Limited Warranty 1 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.