WM-i

Long-life battery powered, cellular IoT data logger for water and gas metering

Wireless transmitter
Wireless transmitting
Water metering
Water metering
Utility meters
Residential meters
NB-IoT
Cat.M/NB-Iot
Pulse input
2x pulse inputs
MBus input
MBus input

Robust, ultra low-power cellular IoT pulse counter and data logger, which comes with a built-in LTE Cat.M / NB-IoT cellular module ensuring reliable data transfer in any environment. The device can be connected to any water meter with a pulse or Mbus output.

Easily upgrade existing meters to smart meters with cellular connectivity, safeguarding your investments without the need for costly replacements!

Offering a standalone operation, it performs reliable automated meter readings. It counts the pulses, saves the data and transfers it to the central server periodically via the NB-IoT/Cat.M network.

The device allows connection of up to 3 meters or sensors through its pulse and MBus inputs. It automatically transmits the collected data to the server or HES at predetermined intervals using MQTT-enabled communication to the Microsoft® Azure IoT platform.

Designed for long-term, maintenance-free operation, the WM-i boasts a high-capacity battery lasting up to 10 years and an IP68 waterproof casing, making it ideal for challenging environments.

Easy installation thanks to the special “deployment mode”.

 

Main Features

  • IP68-protected casing with fastening points
  • LTE Cat.M / Cat.NB / 450MHz cellular module with Nano SIM slot
  • Replaceable, high-capacity battery options with up to 10 years lifetime (8’500 mAh or 19’000 mAh)
  • Automatic / configurable mobile operator, bands, access technology
  • 2 independent Pulse inputs
  • 1 MBus input
  • USB-C port (for local configuration and installation)
  • Microsoft® Azure platform support (MQTT), TLS (optional)
  • Automatic data transmission at preconfigured intervals
  • Configurable alarm thresholds (min/max consumption)
  • Storage and transfer of meter data (identifier, GPS location)
  • Tamper protection (security alarm if cover is tampered) – optional
  • Special “deployment mode” supports local installation (status checking)
  • WM-E Term® software for local configuration, FW updates
  • External SMA antenna connector (50 Ohm)
  • Secure remote firmware updates (via Azure)
  • Watchdog

 

Application

Design

  • IP68-protected casing with fastening points
  • LTE Cat.M / Cat.NB / 450MHz cellular module with Nano SIM slot
  • Replaceable, high-capacity battery options with up to 10 years lifetime (8’500 mAh or 19’000 mAh)
  • Watchdog

 

Connections

  • 2 independent Pulse inputs
  • 1 MBus input
  • USB-C port (for local configuration and installation)
  • External SMA antenna connector (50 Ohm)

 

    Operation

    • Automatic / configurable mobile operator, bands, access technology
    • Microsoft® Azure platform support (MQTT), TLS (optional)
    • Automatic data transmission at preconfigured intervals
    • Configurable alarm thresholds (min/max consumption)
    • Storage and transfer of meter data (identifier, GPS location)
    • Tamper protection (security alarm if cover is tampered) – optional
    • Special “deployment mode” supports local installation (status checking)
    • Secure remote firmware updates (via Azure)

     

    Accessories

    • Different battery options (by order)
    • Universal input cables (for Pulse and / or MBus connection) for tests, POCs, pilots
    • USB-C cable for configuration (order option)
    • Antenna (IP68-protected, SMA 50 Ohm – order option)
    • WM-E Term® configuration software (for local configuration, FW updates)

     

    Technical data

    WM-i

    Datasheet


    WM-E Term configuration software (WM-i compatible)

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