WM-i

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 with up to 10 years lifetime (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 with up to 10 years lifetime (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)