Adapter DELOCK RS-232/422/485 Sub-D 9 female to RJ45 male, 2 m cable

DELOCK RS-232/422/485 Sub-D 9 female to RJ45 male adapter cable (2 m) converts a standard Sub-D 9 (DB9) serial port to an RJ45 male connection while supporting multiple serial signalling standards. The cable is intended for situations where devices with DB9 serial ports need to interface with equipment or adapters that use RJ45 network-style connectors for serial communications. With support for RS-232, RS-422 and RS-485 line standards, this adapter enables compatibility across a range of industrial and commercial serial setups.

Advantages

The adapter offers a compact cable solution that removes the need for bulky converters in many installations. Supporting three common serial signalling standards increases flexibility when connecting to different types of serial interfaces and industrial equipment. The 2 m cable length provides a balance between reach and tidy cable management for desktop, rack or field installations.

Suitable for

• Connecting legacy RS-232 devices with a Sub-D 9 female port to RJ45-based serial ports or adapters
• Integrating equipment that uses RS-422 or RS-485 differential signalling via RJ45 wiring
• Industrial control panels, PLCs, serial modems and console connections where RJ45 serial patching is used
• Field service, test benches and laboratory setups requiring short to medium cable reach (2 m)

When it may not be suitable

This adapter is a passive cable that maps DB9 pins to an RJ45 connector and does not contain active level-shifting electronics. It is not suitable where an active voltage level converter or galvanic isolation is required between devices. Also, if longer runs, shielded multi-core requirements, or environmental protection beyond a basic cable are needed, a different cable or specialized converter should be chosen.

Key specifications

• Cable length: 2 m
• Connector A: Sub-D 9 female (DB9 female)
• Connector B: RJ45 male
• Supported signalling: RS-232, RS-422, RS-485
• Cable type: serial adapter cable for DB9-to-RJ45 connections

How to use

Connect the Sub-D 9 female end to the serial port of the device or extension cable, and insert the RJ45 male connector into the corresponding RJ45 serial port or adapter. Verify the pinout mapping and the required signalling standard (RS-232, RS-422 or RS-485) on both connected devices before powering the system. Use appropriate configuration settings on host devices (baud rate, parity, stop bits, and wiring termination/resistor settings for differential lines) to establish reliable communication.

What to consider before purchase

• Confirm that a passive DB9-to-RJ45 wiring adapter meets your application needs and that no active level conversion is required
• Check the pinout mapping expected by the target RJ45 serial port or adapter to ensure compatibility
• Ensure 2 m cable length is sufficient for your installation and routing requirements

Usage recommendations

For serial communication stability, match the signalling standard and terminal wiring (termination resistors and biasing) when using RS-422/RS-485 over RJ45. Keep cable runs away from high-voltage or noisy power lines and secure connectors to prevent accidental disconnection during operation.