Image coming soon
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 EYN257T-0006-MF RS232 Shielded Null Modem Cable - Metal

Overview

The Black Box EYN257T-0006-MF is a shielded null modem cable designed for direct serial communication between two DTE or DCE devices. Its metal connectors provide superior EMI/RFI shielding and physical durability, making it suitable for industrial control systems, legacy diagnostic equipment, and point-of-sale terminals where reliable data transfer is critical. This cable facilitates direct device-to-device communication without requiring a modem, simplifying network configuration for specific applications.

Compatibility

This cable is compatible with any RS232 serial devices requiring a null modem connection, including but not limited to: industrial automation controllers, legacy network switches, serial printers, and diagnostic interfaces on various hardware platforms. It uses standard DB9 (9-pin) connectors on both ends, wired as a null modem (crossover) configuration.

Installation Notes

The metal connectors offer robust strain relief and EMI/RFI shielding, essential for maintaining signal integrity in electrically noisy environments. Ensure both connected devices are powered down before making or breaking the connection to prevent potential data corruption or hardware damage. The shielding on this cable is effective against common electromagnetic interference, supporting reliable communication in factory floors or server rooms.

What's in the Box

  • 1x EYN257T-0006-MF RS232 Shielded Null Modem Cable - Metal
Specifications
Brand: Black Box
MPN: EYN257T-0006-MF
Type: Modem
Color: Black
Connectivity: RS-232
Q&A
Reviews
Have Questions?

Black Box RS232 Shielded Null Modem Cable - - EYN257T-0006-MF

$34.86
$33.99

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