Digitalisation is the art to not just own IoT data, but to generate actual value from it. On the basis of a consistent and uniform data base, it is possible to uncover potential savings, monitor processes, increase productivity and automate operational processes.

Consistent data base

Complete overview

High added value

A One-stop solution for your IoT project

Based on many years of experience in the field of energy controlling, deZem's product portfolio has evolved into an innovative and modular system for the acquisition and analysis of any kind of IoT data, including an IoT platform, IoT analytics, sensor technology and edge computing.

Whether it's about setting up a new metering infrastructure, integrating existing systems, or consolidating IoT data from a wide range of sources on a single data platform: deZem has the perfect solution for your requirements.

The IoT analytics software is also modular with visualisation and analysis tools as well as a reporting option allowing to track down savings potential, increase efficiency and productivity, reduce costs and save resources.

Regain valuable time for your core business tasks.


Product launch: Harvy2 Rogowski Edition available now!

Now even more use cases. Our battery-free Harvy2 LoRaWAN current sensor is now also available as Rogowski edition. Its advantage: three Rogowski coils and a voltage transformer can be connected. This means that even higher currents (up to 120,000 amps!) or parallel conductors of the same electrical phase can be detected with just one Harvy2 input. The Rogowski coils' flexible design allows them to be effortlessly wrapped around conductors, even in tight spaces.

You would like to try out the Harvy2 with clamp-on current transformers or with Rogowski coils?
Then please contact us!

Release: Harvy2 firmware available now !

Sneak preview. It is so easy to configure the Harvy2.

With the latest firmware, a very intuitive interface has been implemented. The interface makes it super easy to set up the corresponding current transformers. It is browser-based and works both online and offline.

The new firmware includes the following functions:

  • Intuitive web-based configuration interface (i.e. no separate software required, operation via your browser, even offline)
  • A wide range options for customisation, e.g. for setting the transformer types used, for assigning the phases and for the use of a voltage transformer if applicable
  • Easy updates: As of version 1.0, updates can be carried out quickly and easily via USB-C and the web interface, even locally on site
  • Connecting the sensor to the LoRaWAN network
  • Data rate configurable from 1-60 min
  • Immediate display of the measured values in the configuration interface
  • Switchable between effective current and active power measurement
  • and much more

Merry Christmas - Harvy2 now available!

The moment we’ve all been waiting for has arrived! Christmas has come, and our Harvy2 LoRaWAN current sensor is now available in large quantities! Our warehouses are stocked up and the firmware has been updated with even more great features.

Our product launch took place at the Smart Country Convention (SCCON) in Berlin, where we unveiled our battery-free current sensor to the public for the very first time. Visitors were impressed by the ease of its installation and the quick insights the Harvy2 provides for optimizing consumption.

Another highlight was the 4-page cover story in the BWK Energie magazine about deZem and our next-generation sensors. Smart sensors such as the Harvy2 are the ideal tool for harvesting the "low hanging fruits" of energy efficiency measures quickly, easily and cost-effectively.

If you missed our product launch or simply want to know how you can use the Harvy2 in your company, download the BWK article here and/or make an appointment for a personalised product demo.

Merry Christmas and all the best for 2024!

Your deZem Team

→ read BWK article
→ request product demo or order

Start using IoT data - instead of just collecting them. With deZem!

As you know, deZem devised its product portfolio for doing energy controlling. Over the years, we have developed a system of software, hardware and services that our customers, however, use for many different purposes! They collect high-resolution time series from wildly diverse sources, facilities, processes, buildings. They do not just collect energy data – they collect IoT data!

Our customer’s objective is improving their energy efficiency, but often it is also more generally monitoring processes, reducing costs, increasing productivity, and optimising operations - in factories, data centres, hospitals, agriculture, administrative building, you name it. In short, the applications for deZem products have become as diverse as our customers!

At the same time, we have steadily evolved our product portfolio to embrace the rapidly growing Internet of Things (IoT) and related innovative technologies. Do you already know about our LoRaWAN und Edge Computing products?

Our website, on the other hand, so far continued to focus on the topic of energy controlling. Today, however, we have put online a revised landing page that reflects our broader focus.

It will take some time to update all our web pages and present all the different aspects of our IoT portfolio. Please continue to check for updates in the coming weeks. Quite possibly, you will find new ideas and solutions for your IoT project.

A final word: Energy controlling is a matter close to our hearts; of course we continue to optimise all our products for this important use case. In our opinion, improving energy efficiency by taking a detailed “digitized” look on consumption is the most effective and economic way to achieve climate protection and independence from fossil fuels.

We are very much looking forward to your feedback

|   Pressemitteilung

IoT software deZem DataSuite optimised for mobile devices

IoT data always at your fingertips

Millions of sensor readings from machines, facilities and buildings arrive in the deZem IoT software every day. Visualising such Big Data in a way that is both easy to understand and allows for further analysis is a challenging task – even more so on small screens. In its latest update, deZem has therefore updated the design of the dashboard module deZemBoard and the visualisation and analysis module deZemVis. More importantly, deZem optimised the usage on mobile devices such  that information is readily accessible  and even in-depth analysis tasks can be performed ad-hoc on mobile devices.

A consistent and central database is the basis for identifying savings potential, monitoring processes, increasing productivity and automating operating procedures. However, in order to interpret machine-, energy- and environmental data, processes and their interactions, all this needs to be presented in a simple and comprehensive manner. In fact, it is often useful to clarify questions about anomalous or interesting data directly on site – on the smartphone.

With the latest update, the deZem visualisation and analysis software can be operated conveniently on small screens such as smartphones or tablets: Current and historical data is displayed on dashboards in so-called widgets as curves, bars, sankey diagrams, and many more ways. Intuitive navigation supports deep-diving into every detail. Comparing different media and time periods, statistical analyses and tables are implemented in a visually catchy way. Interactive tips and tricks support users in their navigation.

Your smartphone as telescope and microscope for IoT data

Diagrams must show a lot of information – axes and labels, legends and much more. Therefore they are notoriously difficult to display on small screens, especially when it comes to interactive usage. With the new version of the deZem DataSuite, the inherent potential of smartphones is fully exploited to present all information clearly, and to intuitively explore more details by tapping, swiping, dragging, rotating, etc. Of course, the same dashboards can be used on the desktop, as before.

Comprehensive management of notifications, alarms and comments

The presentation of relevant information on the actual data has also been optimised for display on mobile devices. Icons show whether an alarm has been triggered, a colleague has commented on a measurement, or whether a sensor stopped delivering data.

Learn more about the deZem DataSuite ...

Mobile view deZem deZemBoard

BETA tests are starting: Dashboards are now optimised for mobile use!

Over the past months, our front-end developers, UX/UI designers and testers have worked hard and no expense nor effort was spared to make our software module deZemBoard a pleasure to use on smartphones as well. We took the chance to integrate many new functions, for example a concise management of notifications and alarms.

Even before the official release, we would like to give our customers and interested parties planning to introduce software for their energy or IoT data management the opportunity to test the mobile dashboards now in the beta version.

We hereby invite you to the Beta-Test!

Are you interested?

Then simply contact us by email or phone.

Success stories from different sectors

Since 2015, NTT, Europe's largest data centre operator, has been using the deZem system for their energy management of over 300 MW of colocation capacity across 10 sites.

The analysis of a ventilation system using a mobile metering case allowed a 50% saving in the operation of the ventilation system of an office building.

For a contractor, deZem acts as a full-service provider for the technical monitoring and energy management of 300 logistics centres.


LoRaWAN (Low Range Wide Area Network) is the technology of choice for wireless data transmission over long distances of up to several kilometres. The radio signal penetrates thick walls and even travels out of deep wells. LoRaWAN sensors require little or even no battery. The innovative technology is used, for example, in smart city projects, for networking of factory premises or monitoring wells and holes. deZem offers a wide range of innovative LoRaWAN solutions that seamlessly integrate in the overall system.


What our customers say

Elegant, Efficient, Flexible

"We searched a long time and deZem was clearly the smartest, best performing and most flexible solution."

Siemens Real Estate, Berlin


"The introduction of energy controlling at the HTW Berlin has worked excellently thanks to your work. Professional, solution-oriented and based on partnership at all times. Many thanks for that!"

University of Applied Sciences, Berlin

Excellent tool

"The user receives an excellent tool for recording, visualising, controlling and optimising his energy and water consumption on his own responsibility, building by building and in real time"

Building and Property Management of the LWL (Landschaftsverband Westfalen-Lippe)


We are always at your service – in every project phase

You don't know yet how or where to start? You are facing challenging tasks, need to integrate an existing system or are you still in the process of defining objectives? deZem helps in every phase of your IoT project: We support you in creating metering concepts, advise on suitable sensors and metering technology, and offer workshops and trainings. We also accompany you in the implementation of an energy management system according to ISO 50001, carry out pre-audits or internal audits.

Any idea or question, deZem is a competent sparring partner!

→ Learn more about our services

Information Security

Your data is secure

Protecting IT systems from cyber attacks, failures, data leaks and unauthorised access becomes ever more important. Therefore, deZem implements the requirements of ISO 27001 and operates servers exclusively in German data centres certified according to ISO 27001. For you, this means very high information security, restrictive management of access and encrypted communication with all system components.

→ See for yourelf