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

Wireless router
Wireless router
4G LTE access
4G LTE access
4x Ethernet
4x Ethernet
MBus connection
MBus connection
DIN mount
DIN mount
SKU: M2M PRO 4 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 applications such as distribution automation, smart metering 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. 

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 run their own applications on the platform. The open-source OS also guarantees that our clients will not depend on us in developing custom apps for their device. It comes in a 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.

This device can be managed by our Device Manager® application, which provides continuous central management, QoS monitoring, mass configuration 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 (2G / 3G / 4G LTE / LTE 450, CDMA450)
  • 4 Ethernet ports (RJ45, LAN, 10/100Mbit)
  • RS232/RS485 port (RJ12 interface)
  • micro-SD card slot
  • micro-USB configuration port
  • Supercapacitor (against small power outages)
  • Transparent, secure wireless data transmitting
  • Modbus, MBus communication
  • Expansion options
  • Remote firmware updates, configuration
  • Safety, networking and management protocols


Expansions (optional)

  • Second RS232 port
  • Optional secondary module option (internal miniPCI-e interface for NB-IoT wireless module) – order option
  • 2- or 4 digital IOs (potential-free S0 type inputs)
  • Analog inputs (4-20mA)
  • “One-wire” (for temperature sensors)
  • M-Bus (up to 31 meter connection)
  • ModBus (up to 250 device connection)
  • Wireless M-Bus (RF868)
  • I2C, SPI, General Purpose I/O


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



  • Utility companies
  • Smart metering
  • Solar / PV farm surveillance
  • Industrial users
  • Corporate partners
  • Safety (DVR, camera)

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)



  • M2M IO/RS485 Concentrator 8DI®/ 32DI®
  • 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 (2020-08-26)

You may also like…


    The remote management and maintenance of an IIoT solution can be a real challenge. Improve the network availability and operational efficiency of your fleet!

    Request Quote