WM-i 4-20mA

Robust, ultra low-power cellular IoT data logger and data concentrator (DCU), 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 two sensors due to its analog inputs (4..20mA or 0-10V).

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

Offering a standalone operation, it performs reliable automated sensor or meter readings. The device allows connection of 2 analogue sensors through its inputs.

The WM-i receives and collects signals of connected two sensors, then it transfers all data at predetermined intervals to the Microsoft^® Azure IoT platform with MQTT protocol and TLS encryption through the LTE Cat.M / NB-IoT network.

The easily installable device was designed for long-term, maintenance-free operation, the WM-i 4..20mA 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).

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 analog inputs, which supports 0..20mA / 4..20mA current loop output sensors or 0..10V / 1..10V voltage output sensors
- USB-C port (for local configuration and installation)
Internal antenna (mounted inside of casing)
Tamper protection (security alarm if cover is tampered) – optional
Cold start (supporting the installation)
Automatic / configurable mobile operator, bands, access technology
Automatic data transmission at preconfigured intervals to the with Microsoft^® Azure IoT platform
Transfer of meter data (identifier, location, GNSS option)
WM-E Term^® software for local configuration, FW updates
Secure remote configuration / firmware updates via Cloud IoT platform (TLS)
“Deployment mode” supports local installation (status checking)
Watchdog

Application

Design

IP68-protected casing with fastening points
LTE Cat.M / Cat.NB / 450MHz cellular module with Nano SIM slot
Internal antenna (mounted inside of casing)
Replaceable, high-capacity battery with up to 10 years lifetime (19’000 mAh)
Watchdog

Connections

2pcs analog inputs, which supports 0..20mA / 4..20mA current loop output sensors or 0..10V / 1..10V voltage output sensors
USB-C port (for local configuration and installation)

Operation

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

Accessories

Replaceable, high-capacity battery with up to 10 years lifetime (19’000 mAh)
Cable for sensor connections (2 sensors, USB connection, wire end sleeves, internal connector to the device PCB) for tests, POCs, pilots
USB-C cable for configuration (order option)
WM-E Term^® configuration software (for local configuration, FW updates)