nemi WAMS Bridge

Battery Powered
4G-Gateway for Wireless Data Transmission over Long Distances

nemi WAMS Bridge is the gateway in i4M's wireless Wide Area Monitoring System. It receives data from up to 30 wireless sensors at a distance of up to 1000 m and forwards the data to a server via 4G cellular connection - all with minimal energy consumption. nemi WAMS was developed for applications that do not require high data rates but coverage of sensors over long distances and long battery runtimes. This is made possible by i4M's own highly efficient radio technology nemi Link 868. The elimination of cabling enables easy installation even on large assets and structures. Examples for use cases are climate or crack monitoring on bridges or continuous temperature monitoring on rolling bearings in big production facilities.

nemi WAMS Bridge

Technical details of nemi WAMS Bridge

Orbitdarstellung nemi WAMS Bridge

Key features

Receiver of up to 30 sensor nodes in the radio network nemi Link 868 (star topology)

Completely wireless due to radio technology nemi Link 868 and external battery / solar panel

Low energy demand

Data transmission via secured 4G NB-IoT mobile connection

Transmission of raw data or pre-evaluated / smart data by edge computing via MQTT streams

Robust, weatherproof IP 67 housing


Icon nemi Link 868

nemi Link 868 - i4M's own robust long-range radio technology in the 868 MHz frequency band; Range up to 1000 m; max. sum sampling rate of 200 Hz at 24 bits per sample

Icon LTE

4G cellular connection; energy-efficient NB-IoT protocol with 300 kbit/s download and 375 kbit/s upload

Icon Batterie

Connection of external 6 - 17 V battery / solar panel

Compatible sensor / telemetry modules in the nemi Link 868 radio network:

nemi WAMS Node

Use Case

Use Case Monitoring von RIssbreiten

Monitoring of crack widths and local climate

Together with Kempen Krause Ingenieure, i4M has equipped several motorway bridges in Germany with a crack monitoring system to extend the service life of the bridges. All components have wireless data transmission and are battery powered.


Poor accessibility

Years of battery life

Weather conditions

Large distances between measuring points

Solution & Advantages

Simple installation

Self-sufficient solution

Extension of the safe use of bridges

Automatic report generation

Kein passendes Produkt gefunden?

Es gibt Projekte, die auf dem weißen Blatt anfangen müssen, weil Neues, vorher nie Dagewesenes entstehen soll. So sind auch unsere nemione®-Produkte entstanden, die in vielen Iterationen zum Serienprodukt geworden sind. i4M analysiert mechanische Systeme, ermittelt relevante Messgrößen und entwickelt maßgeschneiderte und hochintegrierte Messtechnik, um die optimale Lösung für Ihre individuelle Herausforderung zu finden.

Zu den Individuallösungen von i4M
Kontaktfoto von Lois Jacobs

Lois Jacobs
Sales i4M technologies

+49 157 34 10 59 28


Do you have questions about our nemione® products? Do you want to know whether our nemione® products are also suitable for your assets? Then please feel free to contact me by phone or e-mail.

Stephanie Paulus, M. Sc.

nemione® is a trademark of
i4M technologies GmbH

Foersterstr. 5
52072 Aachen

+49 157 34 10 59 30