Serial to Ethernet Converters

Your Direct Manufacturer for Serial to Ethernet Converters & Gateways

Stop letting legacy serial limitations slow down your production. Engineered for the toughest environments, our RS232/RS485/RS422 to Ethernet solutions seamlessly bridge your equipment to modern IP networks. With baud rates up to 921.6 Kbps , wide temperature operation (-40°C to 85°C) , and robust 1500V–3000V optocoupler isolation, we guarantee zero-packet-loss data transmission. Available in 1 to 32-port models with full OEM/ODM customization support.

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Valtoris Industrial Serial to Ethernet Converter Solution

Whether integrating legacy CNC machines into modern factory networks or polling smart meters for energy management, Valtoris industrial serial device servers ensure reliable telemetry and efficient data bridging across diverse topologies.

Wide Temperature Reliability

Achieve stable 24/7 operation in harsh environments with -40°C to 85°C industrial rating and 2KV surge protection. Your data keeps flowing when temperatures spike.

Multi-Protocol Flexibility

Configure easily as Modbus , MQTT gateway, or serial to Ethernet converter—RS232/485/422 to TCP/IP with JSON support. One device, countless applications.

Comprehensive Support

Enjoy peace of mind with customization, OEM/ODM services, technical assistance, and warranty support. We don’t disappear after shipment.

High-Speed Performance

Increase productivity with baud rates up to 921.6 Kbps and full-duplex communication. Real-time data for critical monitoring and control.

Scalable Port Options

Choose from 1, 2, 4, 8, 16, or 32-port models to match your network size. Desktop, DIN-rail, or 1U rack-mount for any installation need.

Isolation Protection

Models with 1500V–3000V optocoupler isolation protect your PLCs and controllers from ground loops and EMI. When electrical noise happens, your system stays safe.

Applications of Industrial Serial Device Servers

Discover the versatile applications of Valtoris industrial-grade serial to Ethernet converters for reliable data acquisition, remote monitoring, and control across industries requiring stable connectivity in harsh environments.

Petrochemical & Oil Field Monitoring
Monitor pressure and flow sensors at remote well sites. -40°C to 85°C operation with 2KV surge protection. Reduce wiring costs by 70%, improve maintenance efficiency 3×.
Factory Automation & PLC Monitoring
Connect legacy CNC machines, PLCs, VFDs, and HMIs to Ethernet for seamless NC file transfers, remote diagnostics, and centralized control.
Smart Energy & Utility Monitoring
Collect inverter and meter data from solar farms and substations. Modbus gateways transmit encrypted data to cloud platforms. Reduce on-site inspections by 80% and fault repair time to 2 hours.
Smart Agriculture & Greenhouse Control
Aggregate 200+ sensors for temperature, humidity, CO₂ monitoring. Extend RS485 distance to 1,800m and expand to 256 nodes. Achieve 99.97% system availability.
Wastewater Treatment & Environmental Monitoring
Connect pH meters and flow sensors across kilometer-wide facilities. Replace manual inspections with real-time data. Reduce maintenance costs through early fault detection.
Building Management Systems
IIntegrate HVAC, lighting, and energy meters into centralized platforms. Eliminate 1,200-meter distance limits for multi-floor monitoring. Reduce energy costs by 22%, extend equipment lifespan by 30%.

Ready to Secure Your Industrial Data? Talk to our engineers about your specific SCADA topology or get wholesale pricing for your next deployment. [ Consult an Engineer ]

What Our Client Says

Discover how Valtoris industrial serial device servers help engineers and integrators solve real-world connectivity challenges.

“Tech support walked us through the setup and stayed until everything worked. That’s why we keep coming back.”
Robert K.
Maintenance Engineer
“We deployed Valtoris Modbus gateways across three solar farms. Remote monitoring cut our site visits by 80%—we spot issues before they cause downtime.”
David C.
Solar Project Manager

Why Choose Valtoris Serial Port to Ethernet Adapters?

Engineered for Harsh & Demanding Environments

Our industrial serial to Ethernet converters are built for reliable performance in extreme conditions. With -40°C to 85°C operating temperature, 2KV surge protection on select models, and rugged metal enclosures, they deliver stable data transmission on factory floors, in substations, and within outdoor cabinets.

Deploy with Confidence & Application Guidance

Selecting the right serial device server depends on your port count, interface types, and isolation requirements. Our team provides technical documentation and configuration support—including baud rate matching, IP addressing, and Modbus gateway setup.

Application-Specific Configurations

We offer models with 1500V to 3000V optical isolation for electrically noisy environments, dual Ethernet ports for network redundancy, and flexible IP addressing—shared IP to save addresses or independent IP per port for separate networks.

Value in Reliability & Lower Installation Cost

Multi-port serial to Ethernet converters reduce cabling complexity by consolidating up to 32 serial devices onto one network connection. Wide 9-24V DC input simplifies power integration. By simplifying network architecture and providing reliable long-term operation, we reduce total cost of ownership.

Industrial Serial Device Servers Related Resources

Expert Guides to Industrial Serial Device Servers

Consider port count (1 to 32), interface type (RS232, RS485, RS422, or mixed), and isolation requirements (1500V to 3000V for noisy environments). Need remote cloud connectivity? Choose models with MQTT. Need network redundancy? Select dual Ethernet port versions.

Reduce cabling costs by consolidating up to 32 devices onto one network connection. Minimize downtime with industrial-grade reliability. Eliminate field service calls through remote diagnostics. Lower inventory costs with multi-function devices that serve as serial servers, Modbus gateways, and MQTT gateways.

We provide OEM/ODM services including custom firmware, tailored baud rates, specific protocol support, modified enclosure designs, and private labeling. Contact our engineering team to discuss your exact requirements.

Technical documentation, configuration software (VirCom), and web-based setup guides are included with every purchase. Our engineering team provides email and remote assistance. We offer warranty support and long-term product availability for repeat orders.

Latest Blog Posts

Stay ahead in connectivity by exploring the latest trends, practical guides, and technical insights on Industrial IoT, remote monitoring, and industrial communication networks.

Get a Quote for Industrial Serial Device Servers

Need to connect legacy serial equipment to Ethernet networks or enable remote monitoring? Our specialists can help you select the right serial to Ethernet converter, Modbus gateway, or multi-port serial server for your application.From 1-port converters to 32-port rack-mount models—including options with 1500V to 3000V optical isolation—we provide hardware matched to your port count, interface needs, and environment.

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Frequently Ask Questions

Q: Will converting RS485 to Ethernet introduce latency and cause my Modbus polling to time out?

A: Standard converters often cause timeouts because they wait too long to pack serial data into Ethernet packets. Valtoris industrial serial servers solve this by allowing you to customize the packet packing parameters (by byte length or time interval). This ensures strict Modbus RTU timing, allowing your SCADA system to poll high-frequency data without timeout errors.

Q: What is the difference between transparent transmission and a true Modbus Gateway?

A: A standard serial server uses transparent transmission to send raw data over TCP/IP in a simple way. A real Modbus Gateway translates the protocol between Modbus RTU and Modbus TCP in real time. Both of these things are in Valtoris units. Our gateway mode lets multiple SCADA masters read data from a single serial slave at the same time without any data collisions.

Q: How do I connect legacy RS232 machines if my modern control PC lacks a serial port?

A: You can download and use our free Virtual COM port software (VLVircom). It connects the Ethernet connection back to a regular COM port on your Windows PC, like COM5. Your old software will work over the LAN just like it would with a real serial cable. If you’re trying to connect a machine shop to the internet, read our step-by-step Guide to Setting Up Remote CNC Control via RS232.

Q: When is optical isolation strictly necessary for serial device servers?

A: It is mandatory if you are deploying in electrically noisy environments with high EMI or potential ground loops —such as VFD control cabinets, outdoor solar farms, or welding shops. Our models feature 1500V to 3000V optical isolation, ensuring that a massive voltage surge on the factory floor cannot travel back through the network and destroy your IT server room.

Q: What happens if the network connection drops temporarily? Do I need to restart the software?

A: No. Our serial servers have a built-in hardware watchdog and an automatic network reconnection feature. If the LAN connection drops, the device keeps trying to reconnect in the background. The Virtual COM software automatically re-binds as soon as the network is back up, with no need for human intervention or system reboots.