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 meter or sensor with a pulse output (for water, gas, BTU or any sensor like temperature, optical distance measurement (lidar), etc.).

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. The device allows connection of up to 2 meters or sensors through its inputs.

It counts the pulses of connected meters and sensors, then it transfers all data at predetermined intervals to the Microsoft^® Azure Cloud IoT platform with MQTT protocol and TLS encryption via LTE Cat.M / NB-IoT network.

**Quick Specifications — WM-i PULSE**
Device type	IoT data logger for meters, sensors
Primary use case	Smart water and gas metering (AMI/AMR), LTE and Cat.M upgrade of legacy meters
Cellular & RF Access Technology	LTE Cat.M/NB / 450 MHz; 2G fallback
Protocols	IEC, TCP, MQTT (with Azure compatible mode)
Interfaces, Physical Connectors	Pulse, USB-C
Server	IoT Cloud, Azure Cloud
Meter compatibility	Pulse output meters
Power & Environment	internal DC battery with 19,000mAh capacity / optional external battery pack — between -25 Celsius and +70 Celsius degree
Approvals & Certifications	CE, RoHS, ReD DA, IP 68 Protection
Firmware	ThreadX (RToS embedded system)
Configuration / Remote Management	WM-E Term configuration software (downloadable) via local or TCP / Azure IoT Cloud
Security	TLS, SHA-256, Tamper protection

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

Optionally, add-on extension possibilities are available to extend capabilities for PoCs, unique orders (e.g. different connections, adding sensors).

Battery powered

The WM-i PULSE data logger is delivered with one high-capacity 19,000 mAh battery included. This provides long-lasting, reliable operation even in demanding applications.

For extended autonomy, the logger can be ordered with an optional external battery pack. This pack contains three additional 19,000 mAh batteries, giving you a total of four batteries (1 internal + 3 external).

If you decide to add the external battery pack later, we recommend also replacing the internal battery with a new one. This ensures all four batteries are at the same charge level, which is important for optimal performance and long-term reliability.

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
Connections:
- 2pcs independent Pulse inputs
- USB-C port (for local configuration and installation)
- External SMA antenna connector (50 Ohms)
Tamper protection (security alarm if cover is tampered) – optional
Cold start (supporting the installation)
Device displacement sensor – available for PoC
Leak detection, excessive flow/consumption detection (exceeding the normal consumption, warning of a failure) – available for PoC
Reverse flow detection and measurement – optional, for PoC
Automatic / configurable mobile operator, bands, access technology
Automatic data transmission at preconfigured intervals to Microsoft^® Azure platform (via MQTT)
Optional protocol support: LwM2M, etc. (in case of PoC)
Transfer of meter data (identifier, location, GNSS option)
Pre-configured settings at manufacturing
WM-E Term^® software for local configuration, FW updates
Secure remote configuration / firmware updates via Azure (TLS)
“Deployment mode” supports local installation (status checking)
Watchdog
Battery pack for 3x life span (order option)