IoT Router / Gateway PRO4 for Industrial Use

Industrial cellular router, gateway and data concentrator developed specifically for IoT and IIoT applications

Wireless router
Wireless router
4G LTE / LTE 450
4G LTE / LTE 450
4x Ethernet
4x Ethernet
RS485 / 2 DI
MBus connection
MBus meters
DIN mount
DIN mount
SKU: M2M PRO4 Category:

Designed specifically for industrial use, the PRO4 router offers reliable, secure high-speed wireless connectivity and remote access. It enables the integration of various industrial applications such as smart metering, industrial automation, substation management or the integration of Distributed Energy Resources (DER).

It comes with all the interfaces, protocols and management functions desirable in the world of industrial automation and smart grids. It is the preferred choice for mission-critical cellular communications of many large energy companies and IoT system integrators. 

Cellular routers are highly effective for the implementation of reliable and extremely secure communications networks for remote substation SCADA, distribution automation, and metering applications. The routers collect data via Ethernet, RS232/RS485 or I/O and send it to a central server through the encrypted 4G LTE cellular networks. For maximum security, OpenVPN, IPSec VPN services and firewall are also available. For higher levels of reliability, our cellular routers may be equipped with two SIM cards.

The PRO4 has a modular design, meaning that there are options for expansions. By default, it has 1 SIM card slot, 4 Ethernet ports, RS232/RS485 interface (RJ12), a microSD card slot, and a uUSB port for configuration and OTG functions. The open-source, Linux-based operating system OpenWrt® (optionally Debian) allows users to develop and run their own applications on the platform. It comes in an IP51 housing, supports DIN-rail, and the ports can be protected under sealable terminal cover. 

Supports the most important industrial and network protocols like TCP/IP, Modbus TCP, Modbus RTU, Modbus Gateway, MQTT, LwM2M etc. 

We also offer customization (protocols, interfaces, modules etc.) for our clients. More than 100.000 units have been sold around the world. 

The M2M ROUTER PRO4 has full remote access, monitoring and maintenance features.

On-demand OTA firmware and software upgrades may be remotely and securely uploaded to the cellular router from any point within the user’s network. The Windows-based Device Manager® software allows faster deployment and guarantees the secure and proper functioning of the routers. State-of-the-art management functionalities including rapid device onboarding with bulk provisioning, easy administration, in-depth visibility of device status and, its performance metrics and security issues, logical groupings of devices into hierarchical structures for mass software and firmware updates. 



Thanks to our Automatic Modbus Data Acquirer System (application developed for Modbus data collection) this router can also be used as a data concentrator.

The 4G LTE router is currently our most popular product!


Main features

  • Onboard cellular module (4G LTE / LTE 450, CDMA450)
  • 4 Ethernet ports (RJ45, LAN, 10/100Mbit)
  • Industrial terminal block (RS485, 2 digital input)
  • M-Bus expansion (order option
  • micro-SD card slot
  • micro-USB configuration port
  • Supercapacitor (against small power outages)
  • Secure wireless data transmitting with Automatic Data Acquire System (for Modbus, MBus communication)
  • Safety, networking and management protocols
  • Remote firmware updates, configuration


Expansions (optional)

  • Optional secondary module option (internal miniPCI-e interface for NB-IoT wireless module) – order option
  • “One-wire” (for temperature sensors)
  • M-Bus (up to 31 meter connection)


Software / Operation

  • Transparent & secure wireless data transmission
  • Modbus TCP/IP Gateway (Scada connection)
  • M-Bus, Modbus communication
  • Linux-based OpenWrt® operating system
  • Remote software updates and configuration
  • Safety, networking and management protocols



Technical details

Design and outfit

  • Plastic enclosure, fit to DIN-rail
  • Industrial standard interfaces are presented, the ports can be protected by the sealable terminal cover
  • Expansion options (see table)



  • IIoT IO & RS485 Concentrator®
  • Scada and metering systems
  • M-Bus meters, Modbus meters and measurement systems
  • Metering systems (electricity, water, gas)


OpenWRT® system

  • Web interface, Linux CLI
  • Security: Firewall, diagnostic, monitoring of operation parameters, IEE 802.1x encryption, AES128/AES256 encryption, super-capacitor component against short power outages, remote reboot and maintainance, remote voice call
  • Protocols: DHCP, DynDNS, IP route, NAT, IPv4/IPv6, FTP, SFTP, SNTP, NTP, HTTP/HTTPS, SSHv2, IP passthrough, IPSec, OpenVPN
  • Management: SNMPv3 protocol, Device Manager® software (optional management/configuration/updates)
  • Scada Protocols: Modbus TCP / Modbus RTU
  • M-Bus master protocol



  • 4G LTE antenna (optional)
  • DC power cable (optional)
  • RS232 serial cable (RJ12 outfit, optional)
  • RS485 serial cable (RJ12 outfit, optional)
  • OpenWrt® customized router operating system (local web configuration software)
  • 2 or 4 digital IOs and 2nd RS232 port – optional
  • Device Manager® licence


Technical data

M2M Router PRO 4


Product Datasheet

Quick Guide

Installation Guide

User Manual (OpenWrt)

UCI Command Line Reference

EasyCwmp Command Line Reference

License Notice – GNU General Public License Notice

License Notice – License Notice of Vovida Software

Firmware (2020-11-16)

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