Communica

1-Port RS485/RS232/RS422 to Ethernet Converter - For Sale & Rapid Quote (South Africa)

For sale, in stock: 1-port RS485, RS232, or RS422 to Ethernet converters for automation, BMS, and integration. Rapid VAT quotes, branch pickup, and SA-wide delivery from Communica.

connectors wire and cable
June 2, 2026
4 min read

Seamless Protocol Bridging

Convert between RS485/RS232/RS422 serial and Ethernet for flexible connectivity.

In-Stock South African Supply

Minimize delays with local availability and VAT-invoiced quotes from Communica.

Engineered for SA Industry

Robust options compatible with automation, SCADA, and building management systems.

Overview: RS485/RS232/RS422 to Ethernet Converters

Upgrading or networking legacy serial equipment can be a challenge-especially for South African factories, universities, and project teams tasked with integrating older automation or embedded devices within modern IP networks. 1-port RS485, RS232, and RS422 to Ethernet converters provide a reliable solution to this, translating serial protocols directly into TCP/IP, UDP, or HTTP so data can flow between device and network seamlessly.

Whether you're retrofitting industrial PLCs, enabling remote monitoring for building management systems, or connecting instrumentation to cloud platforms, a serial-to-Ethernet converter brings straightforward, scalable interoperability. Communica stocks a focused range of 1-port models from trusted global brands and offers technical product support, local account invoicing, and quick-ship stock for South African requirements.

Supported Protocols & Specifications

Feature RS485 RS232 RS422
Connector Terminal Block DB9 Female/Male Terminal Block or DB9
Max Distance Up to 1200m Up to 15m Up to 1200m
Baud Rates 300bps - 921.6kbps 300bps - 921.6kbps 300bps - 921.6kbps
Isolation (typ.) 1.5kV opto Standard or Opto 1.5kV opto

Most industrial 1-port converters will auto-detect protocol, offer static/dynamic IP, and support serial tunneling or virtual COM port modes. Look for enclosure and mounting options (DIN-rail versus panel), temperature ratings, and possible PoE as key differentiators. Popular models from USR, Waveshare, and DTech are routinely stocked for immediate SA dispatch.

Selection Criteria for South African Projects

  • Confirm serial protocol (RS485, RS232, RS422) per connected device datasheet.
  • Check site voltage (typically 5-36V DC input; some require external PSU-available in accessory bundles).
  • Assess network management features-static IP config, watchdogs for harsh environments, and VLAN/tagging.
  • Review enclosure protection and mounting (indoor, panel, or DIN rail for plant/utility installation).
  • For education and STEM labs, focus on flexible protocols and user-friendly configuration (web interface, virtual COM).
Local tip: If you require rapid procurement with VAT invoicing, Communica's Johannesburg and Cape Town branches can provide walk-in assistance and collection, or arrange swift courier delivery across South Africa.

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Application Examples & Accessory Considerations

Let's look at typical use-cases in the South African context:

  • Factory Automation (PLC Integration): Connect Modbus serial-based PLCs to factory LAN. E.g., a 1-port RS485 converter allows remote HMI or SCADA software to monitor process values in a fertilizer plant. Inputs: 24V DC panel supply, protocol: Modbus RTU.
  • Building Management (BMS): Bridge RS232/422 HVAC, lift, or energy meters to an IoT dashboard across a campus. Typical requirements: 9-12V DC, panel or DIN mount, EIA/TIA compliance.
  • Education/Research: Use with serial test devices in a campus computer lab, remote programming microcontroller boards via TCP/IP.

Compatibility and Accessory Bundles

Check the following when specifying your converter to avoid project delays:

  • Interface cables: Confirm DB9, terminal block tails, and cable lengths (often sold separately).
  • Power supply: Many converters require external plug-in or panel-mount adapters (available in 5V/12V/24V from Communica).
  • Status LEDs: Helpful for diagnostics and troubleshooting-look for models with clear link/serial activity indicators.
  • Rack/DIN hardware: For industrial deployment in electrical cabinets or BMS control panels.

Fast Quoting & South African Availability

Communica maintains local stock of key 1-port models, allowing for quick lead times and VAT-inclusive quotes. Procurement teams can upload part requirements and receive prompt quotations, with spec sheets and support supplied for engineering evaluation. Branch pickup is available in Samrand, Pretoria CBD, and Cape Town. Delivery covers all major South African cities and territories.

Summary Table: Model Feature Highlights

Model Serial Modes Ethernet Mounting Input Voltage
USR-TCP232-302 RS232/RS485 10/100M DIN, Panel 5-36V DC
DTech DT-5019 RS232/RS422/RS485 10/100M Panel 9-24V DC
Waveshare RS232/485/422 RS232/RS422/RS485 10/100M Desktop, Panel 5V/9V/12V
For full part numbers and compatibility information, browse the Networking & Serial Converter and Shop by Brand pages or submit your list for a tailored quotation.

Sources

Communica Samrand — Electronic Component Experts

Communica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.

Last updated: June 2, 2026

Disclaimer: This content is for educational purposes only. Product availability, pricing, and specifications are subject to change. Always verify current details on the retailer's website before making a purchase. We may earn affiliate commissions from qualifying purchases.

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