The Wireless M-Bus Range Extender is a compact and cost-effective device that collects wireless M-Bus messages from utility meters and forwards them to a LoRaWAN® network.

The Range Extender allows a flexible configuration of calendar events for Wireless M-Bus reception windows as well as device filtering by Manufacturer ID and Device ID to select specific groups of meters. Even large Wireless M-Bus messages with maximum payload size can be forwarded with LoRaWAN® radio packets by means of an integrated segmentation and reassembly protocol.

This LoRaWAN certified device includes a long life Lithium battery which ensures in combination with the new ultra-low power radio module iM881A-XL a life time of up to 10 years and more.

The configuration can be managed Over-The-Air via LoRa® messages (on request) or via wired serial interface.

Wireless M-Bus Range Extender (with LoRaWAN®)

Key Features

  • WM-Bus S and combined C/T Mode supported
  • WM-Bus telegram format: A and B
  • LoRaWAN® Activation: ABP and OTA
  • EU868 LoRaWAN® Compliant (v.1.0.2)
  • Flexible configuration of calendar events and device whitelist
  • Confirmed Upload of WM-Bus messages
  • Ultra low power for long battery life

Applications

  • Automated Meter Reading
  • Home and Building Automation
  • Industrial Monitoring and Control
  • IoT (Internet of Things)
  • Smart Cities

The Wireless M-Bus standard (EN 13757-4) is used in many wireless sensor and smart meter applications. These meters and sensors are communicating according to defined radio operation modes based on a standard FSK modulation with more or less range to the corresponding receiving unit.

The LoRa® modulation is a perfect mean to increase the range of wireless communication systems. The Wireless M-Bus Range Extender combines the two existing modulation technics and required communication protocol stacks in one single device.

A typical usecase for this product is the forwarding of WM-Bus messages of a configurable group of sensor / meter devices. This bridge offers a flexible way to define hourly, daily, weekly or monthly reception windows for sampling of WM-Bus messages and a large data memory for temporary buffering. Even large WM-Bus messages with maximum payload size can be forwarded with small LoRaWAN® radio packets by means of an integrated segmentation and reassembly protocol.

Besides LoRaWAN® a proprietary Point-to-Point and Point-to-Multipoint protocol (LR Base) can be selected for local configuration and message forwarding.*

* on request
Frequency rangeSRD Band 863 to 870 MHz
ModulationLoRa® Spread-Spectrum FSK Wireless M-Bus standard (EN 13757-4)
WM-Bus ModesWM-Bus S and combined C/T Mode supported
Max.Output Power+14 dBm
Data Memory8 MBit Flash
Dimensions145 x 92 x 55 mm
Operating temperature-10 °C to +55 °C
AntennaIntegrated antenna or external antenna (on request)
HousingHousing for wall mounting
Playlist: WM-Bus Range Extender - Product Presentation
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Playlist: WM-Bus Range Extender - Config Tool
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