Best RS485 To Ethernet Serial Servers

Looking for the best RS485 to Ethernet serial servers? We’ve got you covered with a curated list of the top 10 options to enhance your industrial network setup.

RS485 to Ethernet serial servers are essential tools for connecting industrial devices to modern networks. They bridge the gap between legacy serial systems and Ethernet-based setups, ensuring seamless communication in industrial environments. Whether you’re managing data acquisition, IoT integration, or remote monitoring, these devices are your go-to solution.

They are easy to install, highly reliable, and packed with features. From Modbus gateways to MQTT support, they handle complex tasks effortlessly. Plus, they work in harsh conditions, making them perfect for industrial use.

With multiple communication modes and advanced security, these servers ensure smooth data flow. Ready to find the best RS485 to Ethernet serial server for your needs? Let’s dive in and explore the top options that will transform your setup.

List of Top 10 RS485 To Ethernet Serial Servers

Image Title Best For Price
waveshare Ethernet Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial, Support Rail-Mount/Modbus Gateway, TCP Server/TCP Client/UDP Mode/UDP Multicast Multi Communication Modes waveshare Ethernet Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial, Support Rail-Mount/Modbus Gateway, TCP Server/TCP Client/UDP Mode/UDP Multicast Multi Communication Modes

This RS485 to RJ45 Ethernet module is perfect for industrial users needing reliable data transmission between serial devices and Ethernet networks. It’s ideal for Modbus upgrades, IoT projects, or multi-device communication in industrial environments.

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Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Rail-Mount Support with PoE Ethernet Port + Electrical Isolation Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Rail-Mount Support with PoE Ethernet Port + Electrical Isolation

This RS485 to RJ45 Ethernet device is perfect for anyone needing reliable data transmission in industrial settings. It’s ideal for data acquisition, IoT gateways, and monitoring systems where safety and efficiency matter most.

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Waveshare RS232/485/422 to RJ45 Ethernet Module, TCP/IP to Serial, with POE Function, Bi-Directional Transparent Transmission, Suitable for Data Acquisition, Intelligent Instrument Monitoring, etc Waveshare RS232/485/422 to RJ45 Ethernet Module, TCP/IP to Serial, with POE Function, Bi-Directional Transparent Transmission, Suitable for Data Acquisition, Intelligent Instrument Monitoring, etc

This product is perfect for anyone needing to connect serial devices to a network in industrial settings. It’s ideal for data collection, IoT projects, and monitoring smart instruments with easy installation and flexible communication options.

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PUSR TCP232-306 RS232 RS485 RS422 to Ethernet TCP IP Modbus Gateway Serial Device Server Serial to ethernet converters PUSR TCP232-306 RS232 RS485 RS422 to Ethernet TCP IP Modbus Gateway Serial Device Server Serial to ethernet converters

The PUSR TCP232-306 is perfect for anyone needing to connect serial devices to a network. It’s ideal for industrial or commercial setups where reliable and stable communication is key.

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Usr-Tcp232-410S RS232 / RS485 Serial to Ethernet Adapter/IP Device Server Ethernet Converter Support DHCP/DNS (1) Usr-Tcp232-410S RS232 / RS485 Serial to Ethernet Adapter/IP Device Server Ethernet Converter Support DHCP/DNS (1)

This RS232/RS485 to Ethernet adapter is perfect for anyone needing to connect serial devices to a network. It’s ideal for IoT projects, industrial automation, or remote monitoring where reliable data transmission is key.

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LINOVISION Dual Ports Serial Server, RS485 and RS232 to Ethernet Convertor, Modbus RTU/TCP Conversion, RS485 and RS232 to RJ45 Convertor, Processor Upgraded LINOVISION Dual Ports Serial Server, RS485 and RS232 to Ethernet Convertor, Modbus RTU/TCP Conversion, RS485 and RS232 to RJ45 Convertor, Processor Upgraded

Engineers who need to turn old RS232 and RS485 devices into smart, Ethernet‑connected gear will love this compact, rugged converter. It’s perfect for POS systems, agricultural sensors, PLCs, and medical equipment that must stay online from any distance.

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Serial to WiFi Ethernet Wireless Converter RS232 RS485 Serial Server(USR-W610) Serial to WiFi Ethernet Wireless Converter RS232 RS485 Serial Server(USR-W610)

The Serial to WiFi Ethernet Wireless Converter USR-W610 is perfect for anyone needing to connect devices with RS232 or RS485 ports to a WiFi or Ethernet network. It’s ideal for simple, reliable wireless communication in homes, offices, or industrial settings.

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PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway Serial to Ethernet Converter USR-TCP232-410s PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway Serial to Ethernet Converter USR-TCP232-410s

The PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway is perfect for anyone needing to connect serial devices to Ethernet networks. It’s ideal for industrial or automation setups where reliable communication is key.

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PUSR USR-TCP232-306 Serial to Ethernet Converter LAN Ethernet TCP/IP to RS232 RS485 RS422 Converter2 PUSR USR-TCP232-306 Serial to Ethernet Converter LAN Ethernet TCP/IP to RS232 RS485 RS422 Converter2

This serial to Ethernet converter is perfect for anyone who needs a cost-effective way to connect serial devices to a network. It’s ideal for RS232, RS485, or RS422 setups, making it great for industrial, commercial, or DIY projects.

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Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Module Support Rail-Mount Modbus Gateway Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Module Support Rail-Mount Modbus Gateway

This RS485 to RJ45 Ethernet module is perfect for industrial users needing reliable data transmission. It’s ideal for IoT projects, intelligent monitoring, and Modbus gateway applications.

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Detailed Reviews

Discover the top 10 RS485 to Ethernet Serial Servers in our expert-curated guide. Each product is thoroughly reviewed for performance, features, and value. Whether you need industrial-grade reliability or cost-effective solutions, this guide has you covered. Find the perfect match for your needs and upgrade your connectivity today!

1. waveshare Ethernet Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial, Support Rail-Mount/Modbus Gateway, TCP Server/TCP Client/UDP Mode/UDP Multicast Multi Communication Modes

waveshare Ethernet Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial, Support Rail-Mount/Modbus Gateway, TCP Server/TCP Client/UDP Mode/UDP Multicast Multi Communication Modes

The Waveshare Ethernet Industrial Serial Server is a powerful tool for connecting RS485 devices to Ethernet networks. It works as a serial server, Modbus gateway, and MQTT gateway, making it ideal for industrial environments.

It supports rail-mount installation, Modbus upgrades, and NTP time synchronization. You can configure it easily via a web browser or DHCP.

With multi-communication modes like TCP/UDP, it ensures reliable data transmission. It also handles multi-host polling and custom heartbeat packets for seamless cloud integration.

Pros Cons
  • Fast data flow between RS485 and Ethernet
  • Easy rail-mount setup for clean installs
  • Many network modes for flexible use
  • Clear device ID with custom heartbeat packets
  • No crosstalk with multi‑host support
  • No built-in Wi-Fi, requires Ethernet connection for operation.
  • Limited protocol support, may not fit all industrial setups.
  • Complex setup, not beginner-friendly for quick installation.

Perfect For:

This RS485 to RJ45 Ethernet module is perfect for industrial users needing reliable data transmission between serial devices and Ethernet networks. It’s ideal for Modbus upgrades, IoT projects, or multi-device communication in industrial environments.

Ready to Purchase?

2. Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Rail-Mount Support with PoE Ethernet Port + Electrical Isolation

Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Rail-Mount Support with PoE Ethernet Port + Electrical Isolation

The Waveshare Industrial Serial Server is a RS485 to RJ45 Ethernet device. It supports PoE power supply and electrical isolation for safer use.

This device works as a serial server, Modbus gateway, and MQTT gateway. It also converts RS485 to JSON for easy data handling. Its rail-mount design is compact and flame-retardant.

It’s ideal for data acquisition, IoT gateway, and instrument monitoring. The bi-directional data transmission ensures smooth communication between RS485 and Ethernet.

Pros Cons
  • Power‑over‑Ethernet powers the unit, cutting separate cables.
  • Electrical isolation keeps data safe from industrial noise.
  • All‑in‑one gateway handles Modbus, MQTT, and JSON.
  • Compact rail‑mount case fits tight industrial spaces.
  • Bi‑directional data flows smoothly between RS485 and Ethernet.
  • PoE function is optional, not standard on all units.
  • Small size may limit port expansion options.
  • Requires screw terminal power input, less plug-and-play.

Perfect For:

This RS485 to RJ45 Ethernet device is perfect for anyone needing reliable data transmission in industrial settings. It’s ideal for data acquisition, IoT gateways, and monitoring systems where safety and efficiency matter most.

Ready to Purchase?

3. Waveshare RS232/485/422 to RJ45 Ethernet Module, TCP/IP to Serial, with POE Function, Bi-Directional Transparent Transmission, Suitable for Data Acquisition, Intelligent Instrument Monitoring, etc

Waveshare RS232/485/422 to RJ45 Ethernet Module, TCP/IP to Serial, with POE Function, Bi-Directional Transparent Transmission, Suitable for Data Acquisition, Intelligent Instrument Monitoring, etc

The Waveshare RS232/485/422 to RJ45 Ethernet Module is a powerful IoT gateway designed for industrial environments. It combines multiple functions like serial server, Modbus gateway, and MQTT gateway into one compact device.

It supports PoE power supply, multiple communication modes, and flexible protocol conversion. Easy to install and cost-effective, it’s perfect for data acquisition and intelligent monitoring.

Pros Cons
  • Multi-function device for industrial use, combining serial server and gateway roles.
  • PoE support for easy power supply and flexible installation.
  • Wide voltage range (6-36V) for reliable operation in tough environments.
  • Crosstalk-free communication with multiple devices, ensuring smooth data flow.
  • User-defined packets for seamless cloud integration and device tracking.
  • No Wi-Fi support, limiting wireless connectivity options.
  • Requires technical setup, not plug-and-play friendly.
  • Limited protocol support, may not fit all use cases.

Perfect For:

This product is perfect for anyone needing to connect serial devices to a network in industrial settings. It’s ideal for data collection, IoT projects, and monitoring smart instruments with easy installation and flexible communication options.

Ready to Purchase?

4. PUSR TCP232-306 RS232 RS485 RS422 to Ethernet TCP IP Modbus Gateway Serial Device Server Serial to ethernet converters

PUSR TCP232-306 RS232 RS485 RS422 to Ethernet TCP IP Modbus Gateway Serial Device Server Serial to ethernet converters

The PUSR TCP232-306 is a powerful gateway that connects serial devices to Ethernet networks. It supports RS232, RS485, and RS422 interfaces, making it versatile for various applications. With its ARM core and optimized TCP/IP stack, it ensures low latency and reliable performance.

This device converts Modbus RTU to Modbus TCP and handles multi-host polling effortlessly. It also features a hardware/software watchdog for automatic restarts, ensuring stable operation at all times.

Pros Cons
  • Fast ARM core, low latency, stable scalability.
  • Easy Modbus RTU‑to‑TCP conversion, multi‑host support.
  • Built‑in watchdog auto‑restart keeps uptime high.
  • Dual RS232/RS485/RS422 ports, plug‑and‑play.
  • 10/100 Mbps Ethernet, auto MDI/MDIX for quick setup.
  • No built-in Wi-Fi, needs wired connection.
  • Limited to Modbus protocols, not universal.
  • No cloud integration, manual setup required.

Perfect For:

The PUSR TCP232-306 is perfect for anyone needing to connect serial devices to a network. It’s ideal for industrial or commercial setups where reliable and stable communication is key.

Ready to Purchase?

5. Usr-Tcp232-410S RS232 / RS485 Serial to Ethernet Adapter/IP Device Server Ethernet Converter Support DHCP/DNS (1)

Usr-Tcp232-410S RS232 / RS485 Serial to Ethernet Adapter/IP Device Server Ethernet Converter Support DHCP/DNS (1)

This dual serial device server gives you fast, steady data flow. It has RS232, RS485, and an Ethernet port. It keeps both serial ports working at the same time with ease.

You can set it up with a web page or simple software. It works in harsh heat or cold. It uses very low power.

It sends data in JSON and supports Modbus. It also adds strong SSL/TLS security.

Pros Cons
  • Dual ports for RS232 & RS485 working simultaneously.
  • Easy setup via web browser or virtual COM software.
  • Secure data with SSL/TLS encryption and two-way authentication.
  • Modbus gateway for local & remote monitoring with PLC/SCADA.
  • No built-in Wi-Fi, requires wired Ethernet connection for operation.
  • Limited ports, only 1 RS232 and 1 RS485 available.
  • Basic encryption, lacks advanced security features beyond SSL/TLS.

Perfect For:

This RS232/RS485 to Ethernet adapter is perfect for anyone needing to connect serial devices to a network. It’s ideal for IoT projects, industrial automation, or remote monitoring where reliable data transmission is key.

Ready to Purchase?

6. LINOVISION Dual Ports Serial Server, RS485 and RS232 to Ethernet Convertor, Modbus RTU/TCP Conversion, RS485 and RS232 to RJ45 Convertor, Processor Upgraded

LINOVISION Dual Ports Serial Server, RS485 and RS232 to Ethernet Convertor, Modbus RTU/TCP Conversion, RS485 and RS232 to RJ45 Convertor, Processor Upgraded

The LINOVISION Dual Ports Serial Server connects your RS232 and RS485 devices to Ethernet. It lets you monitor and control them remotely, even over long distances.

It acts as a Modbus Gateway, converting Modbus RTU to TCP seamlessly. It supports multi-host polling for up to 16 hosts. It’s perfect for POS systems, sensors, PLCs, and medical devices.

Enjoy free cloud service for up to 30 devices. The Cortex-M7 processor ensures fast, reliable performance. Its industrial design works in extreme temperatures and is easy to mount.

Pros Cons
  • Connect RS232/RS485 devices to Ethernet for remote control.
  • Convert Modbus RTU/TCP seamlessly for smooth communication.
  • Free cloud service manages up to 30 devices effortlessly.
  • Powerful processor ensures fast, reliable performance.
  • Industrial design withstands extreme temperatures and tough conditions.
  • Needs network setup skill to use
  • No Wi-Fi option for installs
  • Cloud plan limits 30 devices

Perfect For:

Engineers who need to turn old RS232 and RS485 devices into smart, Ethernet‑connected gear will love this compact, rugged converter. It’s perfect for POS systems, agricultural sensors, PLCs, and medical equipment that must stay online from any distance.

Ready to Purchase?

7. Serial to WiFi Ethernet Wireless Converter RS232 RS485 Serial Server(USR-W610)

Serial to WiFi Ethernet Wireless Converter RS232 RS485 Serial Server(USR-W610)

The USR‑W610 makes your serial gear talk with ease. It links RS232/RS485 to WiFi or Ethernet in clear, simple data flow. It keeps your setup fast and stable.

It works with AP, STA, or both at once. It also supports TCP, UDP, and HTTP modes.

Pros Cons
  • Seamless RS232/RS485 to WiFi/Ethernet conversion for easy connectivity.
  • Supports 2.4GHz WiFi for reliable wireless communication.
  • Versatile modes: TCP, UDP, HTTP, AP, STA, AP+STA.
  • Dual serial ports: RS232 and RS485 for flexible use.
  • No 5GHz support, limiting speed and range.
  • Lacks advanced security features for sensitive data.
  • No built-in power supply, requires external adapter.

Perfect For:

The Serial to WiFi Ethernet Wireless Converter USR-W610 is perfect for anyone needing to connect devices with RS232 or RS485 ports to a WiFi or Ethernet network. It’s ideal for simple, reliable wireless communication in homes, offices, or industrial settings.

Ready to Purchase?

8. PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway Serial to Ethernet Converter USR-TCP232-410s

PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway Serial to Ethernet Converter USR-TCP232-410s

The PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway is a powerful tool for connecting serial devices to Ethernet networks. It simplifies data transfer between different systems, making it ideal for industrial use.

It supports RS232 and RS485 ports, which can work at the same time. It also has a redundant power supply for reliable operation.

With easy configuration via webpage, AT command, or setup software, this device offers flexible work modes like TCP Server/Client and HTTPD Client. It’s a versatile solution for seamless integration.

Pros Cons
  • Dual Serial Ports for RS232 and RS485 use at the same time.
  • Redundant Power options for reliable operation.
  • Modbus Gateway converts RTU to TCP seamlessly.
  • Flexible Work Modes for TCP, UDP, and HTTPD use.
  • Easy Setup via webpage, AT commands, or software.
  • Limited to RS232/RS485, no native USB option.
  • Depends on external power; no battery backup.
  • Requires web setup; no quick plug‑and‑play.

Perfect For:

The PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway is perfect for anyone needing to connect serial devices to Ethernet networks. It’s ideal for industrial or automation setups where reliable communication is key.

Ready to Purchase?

9. PUSR USR-TCP232-306 Serial to Ethernet Converter LAN Ethernet TCP/IP to RS232 RS485 RS422 Converter2

PUSR USR-TCP232-306 Serial to Ethernet Converter LAN Ethernet TCP/IP to RS232 RS485 RS422 Converter2

The USR-TCP232-306 is a cost-effective solution for serial data communication. It converts RS232, RS485, or RS422 signals to Ethernet. It works in TCP Server, TCP Client, UDP Client, UDP Server, or HTTPD Client modes.

It runs on a wide power supply of 5-36V DC. It sends serial data in HTTP format when in HTTPD Client mode. Note: Only one port can be used at a time.

Pros Cons
  • Cost-effective solution for serial data communication.
  • Wide power supply range: 5-36V DC.
  • Multiple work modes: TCP, UDP, HTTPD client/server.
  • Supports RS232/RS485/RS422 ports for flexible connectivity.
  • Needing wide power supply 5‑36 V is inconvenient.
  • One of RS232, RS485, or RS422 runs at once.
  • Lacks GUI—configuration is only via command line.

Perfect For:

This serial to Ethernet converter is perfect for anyone who needs a cost-effective way to connect serial devices to a network. It’s ideal for RS232, RS485, or RS422 setups, making it great for industrial, commercial, or DIY projects.

Ready to Purchase?

10. Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Module Support Rail-Mount Modbus Gateway

Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Module Support Rail-Mount Modbus Gateway

The Waveshare Industrial Serial Server is a RS485 to RJ45 Ethernet module designed for industrial environments. It acts as a data acquisitor and IoT gateway, combining multiple functions in one device.

It supports Modbus, MQTT, and RS485 to JSON conversions, making it versatile for various applications. The module features RS485 and Ethernet ports and uses screw terminals for easy power input.

Small and rail-mountable, it’s easy to install. Bi-directional data transmission ensures seamless communication between RS485 and Ethernet.

Pros Cons
  • Industrial-grade design for reliable data acquisition in tough environments.
  • Multi-functional module: serial server, Modbus gateway, MQTT gateway.
  • Easy installation with rail-mount and flame-retardant case.
  • Wide power range support: 9V to 24V for flexible setup.
  • Bi-directional data flow between RS485 and Ethernet.
  • Power supply not included, requires extra purchase for operation.
  • No built-in power source, relies on external 12V DIN-Rail supply.
  • Manual required, careful reading needed before use to avoid errors.

Perfect For:

This RS485 to RJ45 Ethernet module is perfect for industrial users needing reliable data transmission. It’s ideal for IoT projects, intelligent monitoring, and Modbus gateway applications.

Ready to Purchase?

Buying Guide

RS485 to Ethernet serial servers are essential tools for connecting industrial devices to modern networks. They bridge the gap between legacy serial systems and Ethernet-based setups, ensuring seamless communication in industrial environments.

When choosing the best RS485 to Ethernet serial server, consider these key factors:

  • Communication Modes: Look for devices that support TCP/IP, UDP, and MQTT for flexible data transmission.
  • Industrial Design: Choose servers with rail-mount support and flame-retardant materials for harsh conditions.
  • Power Options: Opt for PoE (Power over Ethernet) or wide voltage input for reliable power supply.
  • Protocol Support: Ensure compatibility with Modbus RTU/TCP and RS485/RS232 for seamless integration.
  • Security Features: Prioritize servers with SSL/TLS encryption and electrical isolation for safe data transfer.
  • Ease of Setup: Select devices with web-based configuration or DHCP support for quick installation.
  • Performance: Check for low latency, multi-host polling, and bi-directional transmission for efficient operation.
  • Durability: Pick servers with industrial-grade build and extreme temperature tolerance for long-term use.

With these factors in mind, you’ll find the perfect RS485 to Ethernet serial server to transform your industrial setup.