Serial to Ethernet Converters

Connect Legacy RS232, RS422, and RS485 Serial Devices to Modern IP Networks

Serial to Ethernet converters bridge the gap between traditional serial equipment and modern Ethernet networks. Whether you need to connect RS-232, RS-422, or RS-485 devices to your LAN, WAN, or the internet, our industrial-grade serial device servers provide reliable, high-performance connectivity solutions that extend the reach and capabilities of your serial equipment.

Why Serial to Ethernet?

Overcome Distance Limitations – Traditional serial connections are limited to short cable runs (typically 50 feet for RS-232). Serial to Ethernet converters eliminate these restrictions, enabling communication over unlimited distances using standard network infrastructure.

Network Your Serial Devices – Access and control serial equipment from anywhere on your network or remotely via the internet. Centralize management, reduce site visits, and improve operational efficiency.

Preserve Your Investment – Modernize legacy serial equipment without costly replacements. Our converters provide a cost-effective path to integrate existing devices into contemporary network architectures.

Industrial-Grade Reliability – Designed for demanding environments with robust construction, extended temperature ranges, and proven performance in mission-critical applications.

Our Product Line

sLAN/All & sWiFi/All Series - Versatile Multi-Protocol Converters

The sLAN/All serial to Ethernet converters provide flexible connectivity for RS-232, RS-422, and RS-485 devices through a compact 9-pin D-sub interface. This versatile solution supports multiple serial protocols and offers easy network integration for a wide range of industrial and commercial applications.

Available in three configurations:

  • Standard Model (sLAN/All) – Reliable serial to Ethernet conversion with traditional power supply
  • PoE Model (sLAN/All PoE) – Combines Ethernet connectivity with Power over Ethernet, eliminating the need for separate power cables and simplifying installation in remote locations
  • WiFi Model (sWiFi/All) – Advanced wireless serial to WiFi converter featuring dual-band 2.4GHz/5GHz IEEE 802.11a/b/g/n connectivity for RS-232, RS-422, and RS-485 devices. Features both Access Point and Station modes for flexible deployment. Perfect for applications where running Ethernet cables is impractical—ideal for warehouses, manufacturing floors, outdoor installations, and remote monitoring applications where wireless connectivity is essential.

ezTCP Industrial Device Servers by Sollae Systems

Our ezTCP series delivers industrial-strength serial to Ethernet conversion with advanced features for demanding environments:

CSE-H53N - RS-232 Industrial Device Server

  • Robust RS-232 to Ethernet conversion
  • Dual IP stack supporting both IPv4 and IPv6
  • Industrial-grade construction for harsh environments
  • Ideal for legacy equipment modernization and industrial automation

CSE-H55N2 - RS-422/RS-485 Industrial Device Server

  • Specialized for RS-422 and RS-485 multi-drop networks
  • Enhanced noise immunity and electrical protection
  • Designed for stability in electrically noisy industrial settings
  • Perfect for SCADA systems, building automation, and process control

ezTCP Embedded Serial Modules - OEM Integration Solutions

For manufacturers and system integrators who need to add Ethernet connectivity directly into their equipment, our embedded serial to Ethernet modules provide compact, board-level solutions:

CSE-M53G - Embedded RS-232 to Ethernet Module

  • Compact embedded module for OEM integration
  • RS-232 serial interface with built-in RJ45 Ethernet connector
  • Optimized TCP/IP stack for efficient network communication
  • Ideal for building Ethernet capability into custom equipment and control panels
  • Low power consumption and small footprint for space-constrained applications
  • Perfect solution for remotely controlling and managing serial devices over Ethernet

CSE-M73G - Embedded RS-422/RS-485 to Ethernet Module

  • Board-level module for RS-422/RS-485 to Ethernet conversion
  • Built-in RJ45 connector for simplified integration
  • Designed for integration into industrial control systems and automation equipment
  • Enhanced electrical isolation and protection for noisy environments
  • Optimized TCP/IP stack embedded for reliable network performance
  • Perfect for OEM manufacturers adding network connectivity to serial-based products

Key Features of Our Serial to Ethernet Converters

  • Multiple Serial Standards: Full support for RS-232, RS-422, and RS-485 interfaces
  • Dual IP Protocol Support: IPv4 and IPv6 compatibility for future-proof networking
  • Advanced Wireless Capability: Dual-band 2.4GHz/5GHz 802.11a/b/g/n WiFi connectivity for cable-free deployments
  • Industrial-Grade Protection: ±15kV ESD protection and extended operating temperature ranges
  • Power over Ethernet: Available on select models for simplified installation
  • Industrial Temperature Ratings: Extended operating ranges for challenging environments
  • Enhanced Protection: Built-in safeguards against electrical noise and damage
  • Easy Configuration: Web-based management and intuitive setup utilities
  • Compact Design: Space-efficient form factors for flexible mounting options
  • OEM-Ready Solutions: Embedded modules available for custom equipment integration

Common Applications

  • Industrial Automation – Connect PLCs, sensors, and controllers to SCADA systems
  • Building Management – Network HVAC, lighting, and access control equipment
  • Point-of-Sale Systems – Integrate cash registers, card readers, and receipt printers
  • Medical Equipment – Enable remote monitoring and data collection from diagnostic devices
  • Telecommunications – Manage and monitor legacy telecom infrastructure
  • Data Acquisition – Collect sensor data from remote locations
  • Security Systems – Network access control panels and surveillance equipment
  • OEM Equipment Manufacturing – Embed Ethernet connectivity into custom products and control systems
  • Wireless Serial Connectivity – Deploy serial devices in locations where cabling is impractical

Technical Support

Our team provides expert guidance to help you select the right serial to Ethernet solution for your specific application. Whether you're connecting a single device or deploying a comprehensive industrial network, we're here to ensure successful implementation.

Browse our collection below to find the perfect serial connectivity solution for your needs.