MODBUS to LoRaWAN converter-transmitter

MODBUS to LoRaWAN converter, pulse counter and safety sensor. All combined. Two pulse inputs, each of which can be configured as a safety / digital input. External power supply.  MODBUS RTU to LORAWAN Converter.


The MODBUS to LORAWAN converter allows 2 operating modes: Transparent or Independent Polling.

In Transparent mode, MODBUS frames (Slave, type of registers + registers range) can be sent from a remote application, through the LORAWAN Network Server, to the “RS485 to LORAWAN” converter. The frames are then sent via the RS485 port. If a response is received by the Transmitter, they are transmitted as one or more uplink messages, to the Network Server (or stored and transmitted later).

In Independent Polling mode, MODBUS frames (list of slave IDs + type of MODBUS  register – Discreet inputs, inputs, holding, coil registers – + register range) can be configured in the “MODBUS transmitter to LORAWAN”, and programmed to be transmitted to the RS485 port at regular (configurable) intervals. The responses are then (stored and) transmitted and transmitted at regular intervals. Possibility to define Masks and Patterns.  

In Pulse count mode, the Pulse Counter counts electrical pulses at a maximum frequency of 200 Hz. It is possible to configure the frequency of data transmission frequency of the counters independently, between 5 minutes and 24 hours. The Pulse Counter supports the “Open Collector” circuit type.

In Dry-Input mode, the Pulse Counter generates a LORAWAN message when the circuit is opened or closed (or in both cases).

The Pulse Counter also transmits the ambient temperature and its battery level.

The sensor configuration is via a USB connection via a free PC application. Or by LORAWAN downlink message.



MODBUS is a non-proprietary data protocol, created in 1979 by Modicon (today Schneider Electric), used for networks of programmable controllers, falling under the application level (level 7 of the OSI Model). It allows communication, either in RTU mode (RS485) or in TCP mode.
MODBUS RTU operates in master-slave mode. Only the master is active, the slaves are passive. The master must read and write to each slave in the serial loop.


Use case of the MODBUS to LoRaWAN converter-transmitter

  • All industrial equipment with MODBUS interface (multiple slaves)
  • Metering of utilities (such as water, electricity, heat) with pulse output
  • Connect any equipment with active pulse output or dry output

MODBUS to LoRaWAN converter-transmitter Technical Specifications

  • 1 RS485 connector
  • Multiple MODBUS Slaves.  All types of registers: Coils, Input, Discreet Input, Holding registers.
  • 2 pulse or dry-input inputs
  • Data collection every 5, 15, 30, 60min. 6, 12, 24 hours
  • Data transmission every 5, 15, 30, 60min. 6, 12, 24 hours

We offer a comprehensive portfolio of Industrial LoRaWAN and NB-IOT IOT sensors. For more information and quotation, contact us!

Additional information




Outdoor. IP65


LORAWAN Downlink message, local (micro-USB)


Up to 15 km

Data Connectivity



868, 915 MHz. EU868, RU868, US915. IN865-867. Programmable, 923 MHz (AS923)

Internal Antenna

-138dB sensitivity

LoRa Channels


LORA Class

Class C


Din-rail, Wall-mounting

Operating Temperature

-40 / +85°C


8..36V external source

Power Output

Default: 25 mW. Max: 100 mW.



About LoRaWAN

The LoRa network, also called LoRaWAN, is a dedicated Data network for IOT sensors. It provides small data transmission on large distances – up to 15 km, while consuming very limited energy, allowing sensors to be operated on small batteries.


  • In Belgium and Luxembourg, Proximus operates a nation wide LoRaWAN network.
  • In France, Orange and Bouygues operate a LoRaWAN network.
  • In the Netherlands, KPN is the main LoRaWAN operator.
  • In Switzerland, SwissCom is the main LORAWAN operator
  • LoRaWAN is available in most Countries (Spain, Andorra, Italy, Bulgaria, Czech Republic, UK, Ireland, Iceland...). Worldwide.

If there is no LoRaWAN coverage in your country/region, it is also possible to deploy a private LoRaWAN network.

Contact us if you have questions about the LORAWAN coverage in your region.


You can use this sensor with your own software platform or IOT solution.
You can also choose the IOT Factory software platform, which includes all the sensors presented here as standard. Among the available features:

  • Many pre-integrated sensors.
  • Javascript editor for decoding new payloads from any type of device.
  • Support for many LORAWAN Network Servers, but also SigFox, NB-IOT, M2M, Bluetooth, WIFI…
  • Customizable dashboards, configurable data processing and alerts, interactive and automated reports (web, pdf, excel), APIs
  • SaaS or on-premise
  • White labeling

The IOT Factory software platform is ideal for your projects in:

  • Smart Building
  • Smart Industries
  • Smart Logistics
  • Smart Construction

iot-dashboard-industry40-s iot-dashboard-device-managements iot-dashboard-smart-buildings

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