Industrial and IoT Routers for Machines, Buildings and Sites, Proven in Practice
An industrial router connects the network of a machine, plant or building system to your company network, the internet or a cellular network and forwards data packets between them. It is typically built for DIN rail mounting, 24-volt supply and extended temperature ranges, and usually includes VPN, firewall and NAT. In the IoT stack it provides connectivity, while other devices handle data processing.
Head of Transport Center (Production Logistics & Mobility), Salzgitter Flachstahl 
Project Manager Digital Engineering, Albrecht Bäumer GmbH & Co. KG 
Head of Development, SPALECK GmbH & Co. KG
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Who offers it
Routers in practice
2 manufacturers from our partner network with 9 solution examples. Those with the most documented use in this category come first.
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SIEMENS AG | Industrial Wireless Communication
Routers2 solution examples
What it is used for
What they are used for, and with what
Based on these manufacturers' solution examples: the most common use cases and the technologies their solutions speak.
Use cases
What to look for
What an industrial router does
An industrial router, often also called an IoT router, connects the network of a machine, plant or building system to another network, usually your company network, the internet or a cellular network. Its main job is forwarding data packets between these networks. Depending on the model, it uses LTE, 5G, DSL, Wi-Fi or Ethernet for the outside connection. On top of that come VPN for secure remote maintenance, a built-in firewall, NAT to resolve address conflicts between identically configured machines, and digital inputs and outputs for simple alarm messages.
Unlike routers for the office or home, industrial routers are designed for harsh environments, whether in a control cabinet, a building's plant room or outdoors: DIN rail mounting, 24-volt supply, extended temperature range, rugged housings and long product availability.
Router, edge device or security gateway?
You buy a router for network connectivity. It connects networks but processes the data minimally or not at all. A 5G router, for example, connects a machine or an automated guided vehicle to the cellular network without making decisions about the content. If you need to convert protocols and preprocess data, you need an edge device. If separating OT from IT with verifiable security is your priority, a security gateway is the right choice.
What to look for when you choose one
Key criteria are the WAN connection (LTE, 5G for public or private campus networks, DSL), the number and type of LAN ports, VPN methods such as IPsec or OpenVPN, and integration with a remote access platform. If you use cellular, supported frequency bands, antenna connectors and dual SIM for higher availability matter. Add to that ingress protection, temperature range, certifications and an update strategy for the entire service life.
In practice, you often select the router together with the manufacturer of your machine or plant, who handles remote maintenance through it. As the operator, you also make sure that remote access can be enabled locally with a key switch or digital input and that every session is logged.
From the network, Siemens and Schildknecht offer router and wireless solutions for machines, buildings and plants, Siemens also with 5G routers. In the solution examples, industrial routers are often the basis for remote maintenance and for equipment operating in remote or mobile settings.
Frequently asked questions about industrial routers
What is an industrial cellular router?
An industrial cellular router connects machines, building systems or remote stations to the internet or your company network over 4G LTE or 5G. It is usually built for DIN rail mounting and 24-volt supply, works across extended temperature ranges and includes VPN and a firewall. You use it wherever no wired connection is available or where the machine should stay separate from the company network.
When does a 5G industrial router make sense?
A 5G industrial router makes sense when you need high data rates, low latency or a connection to a private 5G campus network. Typical applications are automated guided vehicles, mobile robots and machines that are moved around without cabling. For basic remote maintenance or sending a few measured values, for example from building systems, an LTE router is usually all you need.
What is an industrial Wi-Fi router?
An industrial Wi-Fi router provides a wireless network in production, warehouse or plant rooms or connects a machine to an existing network over Wi-Fi. Compared with routers for the office or home, it is more rugged, designed for DIN rail or wall mounting and often supports fast roaming for mobile devices. Many models combine Wi-Fi with LTE as a second path to the internet.
What is a DIN rail router?
A DIN rail router is an industrial router with a housing designed for the 35-millimeter mounting rail in your control cabinet. It runs on 24 volts, tolerates extended temperature ranges and sits right next to the controller and power supply. Depending on your requirements, you can get it with 4G LTE or 5G, several LAN ports and digital inputs and outputs for alarms or switching remote access on and off.
What is a remote access router?
A remote access router is an industrial router that lets your service technicians reach a machine securely over the internet. It establishes an encrypted VPN tunnel, usually via a central remote access platform, so no ports have to be opened in the customer network. Important features are user management with access rights, logging of every session and the option to enable access locally at the machine.
On the podcast
Episodes with these manufacturers and their customers.
- #206From Condition Monitoring to Proactive Service in Mechanical EngineeringIXON · SPALECK GmbH & Co. KG · aiXbrain GmbH · Feb 18, 2026Listen
- #201Private 5G in Heavy Industry: Practical Insights from a Steel PlantSalzgitter Flachstahl · SIEMENS AG | Industrial Wireless Communication · Jan 14, 2026Listen
- #112Industrial Wireless Communication - Real-time communication via 5G with ProfinetSIEMENS AG | Industrial Wireless Communication · Oct 25, 2023Listen
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