Serial Cables for RS-232 and Industrial Connections

Serial cables remain essential for connecting routers, switches, industrial controllers and legacy equipment. This category highlights RS-232, RS-422 and RS-485 cable types for configuration, automation and monitoring tasks.

Choosing the right serial lead

Identify the serial standard and connector type (DB9, DB25, RJ45 or terminal block) your equipment requires. Cable shielding, correct wiring (null modem vs straight-through) and length matter for reliable communication. For industrial uses, opt for ruggedised or shielded leads to resist interference.

Available serial cable types

• DB9 and DB25 – Common for legacy consoles and modem connections.
• Null modem and crossover – Used when two DTE devices must communicate directly.
• Industrial fieldbus and terminal – Specialised formats for sensors and PLCs.

Refurbished or clearance serial cables can help maintain or revive older installations at lower cost; check wiring diagrams and continuity to ensure proper pin mappings. When integrating with modern systems, consider adapters that preserve signal integrity while providing required interfaces.