Industrial Cellular Modems & 4G LTE Gateways
Reliable Serial-to-Cellular Edge Gateways for SCADA & IoT Integration
Valtoris offers robust industrial cellular modems and 4G LTE gateways for reliable IoT data acquisition. Our solutions are perfect for seamless RS485/RS232 to 4G conversion, allowing secure remote communication with native support for Modbus RTU and MQTT built-in.
Industrial Cellular Modems Selection Guide
Compare physical interfaces, serial bus topologies, and edge computing overhead to select the correct edge node.
| VT-DTU300 Entry-level compact 4G DTU for simple data acquisition. | Industry Standard VT-DTU500C Robust serial-to-cellular gateway with Modbus parsing. | Advanced Edge VT-DTU500E Series Multi-interface (Eth/Wi-Fi) edge router for complex SCADA. | |
|---|---|---|---|
| Hardware & Interfaces | |||
| RS485 Port | 1 | 1 | 1 |
| RS232 Port | 1 | 1 | |
| Ethernet (RJ45) | 1 (LAN/WAN) | ||
| Wi-Fi (802.11 b/g/n) | |||
| Power Supply | DC 9~24V | DC 9~24V | DC 9~48V |
| Network Connectivity | |||
| Cellular Speed | LTE CAT 1 | LTE CAT 1 / CAT 4 | LTE CAT 4 |
| Hardware Watchdog | |||
| Software Stack & Edge Logic | |||
| Transparent TCP/UDP | |||
| Modbus RTU to TCP | |||
| Modbus to JSON / MQTT | Basic Support | Advanced Edge Parsing | Advanced Edge Parsing |
| MQTT SSL/TLS Security | |||
| Offline Caching Buffer | 256KB Storage | Supported | Supported |
| View Details | View Details | View Details | |
Valtoris Industrial Cellular Modem Solutions
From factory automation to remote environmental monitoring, the Valtoris industrial cellular modem tackles any application that demands reliable serial-to-cellular data transmission with robust performance.
High-Speed Data Transfer
Achieve LTE CAT1 speeds of 10 Mbps downlink/5 Mbps uplink for highly efficient serial data backhaul across remote OT loops.
Multi-Protocol & Edge-Ready
Seamlessly integrates with Modbus RTU, MQTT, and HTTP systems, featuring autonomous edge computing threshold alarm capabilities.
Watchdog Protection
An independent hardware watchdog circuit automatically reboots the modem during cellular drops, eliminating costly manual truck rolls.
Centralized Cloud Management
Enables remote configuration, parameter monitoring, and batch firmware upgrades for massive distributed field device networks.
Compact DIN-Rail Design
Saves precious control panel space with roughly one quarter the horizontal footprint of traditional wall-mounted modems.
Secure & Reliable Backhaul
Ensures data integrity through persistent MQTT SSL/TLS encryption combined with non-volatile offline historical memory buffers.
Applications Of Industrial Cellular Modems
Discover the versatile real-world deployments of Valtoris connectivity solutions across critical OT infrastructure.
Solar Power Station Monitoring
Our industrial cellular gateways collect inverter performance, energy yield and equipment health data from solar farms, transmitting the data over SSL encrypted MQTT to cloud platforms. Water Treatment Plant Monitoring
Water Treatment Plant Monitoring
Valtoris 4G LTE modems monitor pump status, chemical dosing, and filtration metrics in treatment facilities, supporting SCADA integration and municipal compliance reporting.
Electric Vehicle Charging Networks
Valtoris wireless modems offer LTE CAT1 connectivity for charging piles for remote management, real-time status monitoring and secure transaction processing in outdoor environments.
Smart Agriculture Systems
Valtoris IoT cellular modems connect soil sensors, irrigation controllers and climate monitors (via RS485/RS232) to 4G for real-time control of precision farming.
Smart Waste Management
Municipal recycling bins can be monitored for fill-level, with offline data storage, optimizing collection routes and reducing operational overhead using Valtoris cellular modems.
Oil & Gas Pipeline Monitoring
Our rugged 4G DTUs operate in -40°C to 85°C extremes to transmit pressure, flow, and leak detection data from remote pipelines via MQTT/Modbus protocols.
What Our Clients Say
Real-world performance verified by operational technology partners.
“We have addressed a key connectivity issue with the installation of Valtoris 4G cellular gateways at our remote solar farms. Their rugged construction and reliable data streams have substantially reduced our need for manual site visits and have been critical to our efficient operations.”
“Retrofitting our traditional farm with your serial-to-cellular modems was straightforward. We now have real-time control over irrigation from the office. The instant command response and reliable connection provide the control we need for precision water management.”
Why Partner With Valtoris
Engineered for absolute OT network stability since 2014.
Commitment to Excellence
As a dedicated OT manufacturer since 2014, we deliver reliable, innovative connectivity solutions built with proven technology for demanding industrial applications.
Unparalleled Engineering Support
Our technical team provides direct end-to-end support from physical bus topology selection to ZLMB configuration to remote FOTA troubleshooting.
Custom Solutions Available
We offer extensive OEM/ODM services to tailor enclosure form factors, pre-configured APNs, and firmware logic to your precise integration needs.
Low Total Cost of Ownership
We provide industrial-grade connectivity at a highly competitive factory-direct price, vastly reducing your truck-roll maintenance overhead.
Industrial Cellular Modem Resources
Explore foundational definitions and deployment strategies.
Expert Guides on Cellular Modem Technology
How Does Valtoris’s Expertise In Industrial Connectivity Set Them Apart?
- Established Manufacturer: A dedicated industrial connectivity manufacturer since 2014.
- Built for Industry: Industrial-grade reliability designed for tough environments.
- Technical Specialization: Experts in serial-to-cellular (RS232/RS485 to 4G) conversion and Modbus/MQTT protocols.
- Tailored Solutions: Offers custom OEM/ODM connectivity solutions for Smart Energy, Factory Automation, and Smart Cities.
What Applications Are Suitable For Valtoris’s Industrial 4G Modems?
- Valtoris industrial 4g modems provide reliable, high-speed cellular connectivity for mission-critical data transmission in a variety of environments.
- Suitable for industrial automation, smart energy grids, and environmental monitoring systems.
- Ideal for remote equipment monitoring, real-time data acquisition, and safe fleet management.
- Supports major industrial protocols (Modbus, MQTT) for easy integration in existing SCADA and IoT platforms.
- Its rugged design, wide operating temperature range and low power consumption make it easy to deploy in demanding environments.
How Does The Performance Of Valtoris’s 4G LTE Cellular Modems Compare To Traditional 2G Options?
- Significant Speed Upgrade: LTE Cat.1 speeds of 10Mbps downlink / 5Mbps uplink ensure real-time data transfer and eliminates latency bottlenecks of 2G networks.
- Modern Protocol Support: Native MQTT, JSON, and SSL encryptionn for secure, direct cloud connectivity – something that basic 2G data transmission can’t do.
- Expanded Application Scope: 2G cannot satisfy the requirements of high-frequency data collection and real-time monitoring for smart grids and environmental sensing.
- Advanced Management & Security: Supports remote configuration, cloud-based management, and industrial security features for reliability and operational efficiency over manual 2G setup.
What Maintenance And Service Options Are Available For Valtoris’s 4G Cellular Modem Systems?
- Valtoris offers dedicated support and service options to keep your industrial connectivity solutions running at peak reliability and to extend their service life.
- We provide ongoing technical support for remote device management, configuration, and firmware upgradesand hardware warranty.
- We have a worldwide support network and partners to help minimize any troubleshooting and potential downtime to your operation.
- Remote diagnostics help you troubleshoot and diagnose problems quickly. Documentation and resources help your team manage the system effectively.
Get a Quote for Industrial Cellular Modems
Need a reliable industrial connectivity solution? Our experts are on hand to help you choose the right cellular modem for your application. Get a custom consultation or a detailed quote.
Request Your QuoteDownload the Cellular Modems Line Card & Selection Guide
Get the complete offline technical specifications, protocol compatibilities, and dimension drawings for the VT-DTU300 and VT-DTU500 series. Perfect for your engineering meetings.
Frequently Asked Technical Questions
How do you prevent Modbus RTU timeout errors when polling over a high-latency cellular network?
This is a common pitfall. Traditional Modbus RTU is highly sensitive to timing delays, and polling a remote serial device directly from a cloud SCADA over a 4G network frequently results in communication timeouts. Our gateways solve this by acting as an “Edge Modbus Master.” They autonomously poll your RS485 slave devices locally at high serial baud rates (where latency is effectively zero), encapsulate the register data into JSON, and push it to the cloud via MQTT or HTTP. This completely decouples serial timing from internet jitter.
Can I connect multiple legacy RS485 devices (like VFDs and meters) to a single cellular gateway?
Yes. You do not need a separate modem for each machine. Our transceiver allows multiple Modbus RTU slave devices to be daisy chained along a single RS485 bus. You can configure the VirCom engine to poll the specific registers of each slave ID on the network and aggregate all the metrics into one single very efficient data stream sent to your centralized dashboard.
Can I use this gateway to remotely program my older serial PLCs?
Absolutely. The cellular gateway creates a transparent pass-through connection linked directly to Virtual Serial Port (VCOM) software running on your local PC. This establishes a virtual COM bridge, allowing legacy IDE suites (such as RSLogix for older controllers) to execute remote PLC ladder logic diagnostics and program downloads over the cellular network exactly as if you were plugged directly into its DB9 serial port on-site.
Is it secure to transmit unencrypted legacy serial data over public 4G networks?
Native Modbus RTU and RS232 have zero built-in security. To protect your OT (Operational Technology) data, our gateways never broadcast raw serial frames over the open web. They locally encapsulate serial payloads and enforce strict SSL/TLS encryption across all MQTT TCP connections. For SCADA architectures requiring absolute hardware-level isolation, you can deploy our Industrial Cellular VPN Routers to initiate standard cryptographic L2TP, IPsec, or OpenVPN air-gapped tunnels directly to corporate firewalls.
