Product images are provided for reference and may not represent the exact model, configuration, or included components.

No Bots, Just Experts

Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.

Description

Black Box ICD103A Async RS-232 Repeater

Overview

The Black Box ICD103A is an asynchronous RS-232 repeater designed to extend serial communication distances beyond standard limits. This device is critical for deployments where control panels, sensors, or legacy equipment need to communicate over longer cable runs than typically supported by RS-232. It effectively regenerates and retransmits the serial signal, ensuring data integrity for critical systems. The ICD103A is particularly useful in industrial automation, building management, and security system integrations where reliable serial data transmission is paramount. Its compact form factor and terminal block connectivity simplify integration into existing control cabinets and wiring infrastructure.

Compatibility

This repeater is compatible with any standard RS-232 serial interface operating asynchronously. It functions as a transparent device, meaning it does not alter the data stream or require specific software configuration. It is suitable for use with a wide range of serial devices, including PLCs, industrial controllers, data acquisition systems, and serial-based surveillance equipment that utilize DB9 or terminal block RS-232 ports. The device supports standard baud rates up to 115.2 kbps.

Installation Notes

Installation requires connecting the RS-232 transmit (TX), receive (RX), and ground (GND) lines from the source device to the input terminal block, and the output terminal block to the destination device. Ensure proper polarity is maintained for TX, RX, and GND connections on both sides. The device is powered by the RS-232 signal itself (a form of self-powering or phantom power), eliminating the need for an external power supply in most standard configurations. Verify that the connected devices provide sufficient voltage and current to power the repeater. Maximum recommended cable length between the repeater and each connected device is 50 feet (15 meters) at 115.2 kbps, though longer distances may be achievable at lower baud rates.

What's in the Box

  • 1x Black Box ICD103A Async RS-232 Repeater
  • 1x 3-position terminal block connector
  • 1x 3-position terminal block connector
Specifications
Brand: Black Box
MPN: ICD103A
Color: Black
Connectivity: RS-232
Q&A
Reviews

Black Box Async RS232 Repeater - (2) Terminal Block - ICD103A

$302.08
$269.99

RELATED PRODUCTS

System Design, Deployment & Technical Support

Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.

Fixed scope • Fixed price

System Design Assistance

  • Get help validating product compatibility
  • Coverage requirements
  • Storage planning and deployment architecture before you buy.
Request Design Help

Deployment & Configuration Support

  • Access fixed-scope support for rollout planning
  • User setup guidance
  • Migration and system standardization across single-site or multi-site deployments
View Support Services

Guides, Tools & Calculators

  • PoE requirements
  • Storage retention
  • Camera selection and deployment methodology
Open Technical Resources