FEMS App
Relay Board
8-Channel TCP
FEMS App
relay board
8-Channel TCP
With the FEMS App Relay Board 8-Channel TCP, you activate the additionally purchased relay board and expand your energy system with eight controllable switching outputs. This allows you to automatically control devices such as immersion heaters, heat pumps, or other consumers via the FEMS energy management system — for example, when surplus solar power is available. The app is conveniently installed via the FEMS App Center and seamlessly connects the relay board to your existing system. This makes it easy to integrate additional devices when the built-in relay connections of your storage system are no longer sufficient.
With the FEMS App Relay Board 8-Channel TCP, you activate the additionally purchased relay board and expand your energy system with eight controllable switching outputs. This allows you to automatically control devices such as immersion heaters, heat pumps, or other consumers via the FEMS energy management system — for example, when surplus solar power is available. The app is conveniently installed via the FEMS App Center and seamlessly connects the relay board to your existing system. This makes it easy to integrate additional devices when the built-in relay connections of your storage system are no longer sufficient.
Benefits
Flexible
Thanks to the open FENECON Open EMS platform, you are not tied to any single manufacturer. Your system remains expandable, adaptable, and grows flexibly with your requirements.
Economical
By using the relay board, multiple consumers can be integrated efficiently into the energy management system. Surplus energy is directed exactly where it is needed — saving grid electricity, reducing operating costs, and helping your energy system pay for itself more quickly.
Sustainable
With intelligent control of multiple devices, your self-generated energy is used optimally. Instead of feeding unused electricity into the grid, it can be directed into heating, hot water, or e-mobility — conserving resources and supporting the energy transition.
Key Facts
01
More Connection Options
By using the relay board, even more consumers can be efficiently integrated into the energy management system.
02
One-time purchase instead of a subscription
No hidden-cost subscription model: you purchase the FEMS App once and use it permanently without any ongoing costs.
03
Lifetime Free Updates & Support
Benefit from continuous improvements and personal support — directly from our developers and service staff in Germany.
For everyone who wants
to know all the details!
Here you will find all technical details and operating manuals for our FEMS Apps – compact, transparent, and always up to date.
FEMS
Energy Storage System, inverter and energy management — perfectly matched and always included.
Its your Energy Journey
Our award-winning Open-EMS energy management system FEMS is included with every Energy Storage System. FEMS intelligently controls, monitors and optimises your energy flows – autonomously without an internet connection if desired, or by default via our secure FENECON servers in Germany. Developed by teams in Bavaria – naturally according to the highest data protection standards.
Included
Via online monitoring in your browser or through the app (Android & iOS), you can keep an eye on your energy at any time. Live data, clear analytics, and locally stored history provide full transparency. Your data is always protected through cyber security by design, German-based servers, and a development team located in Germany — naturally in accordance with German data protection and IT security standards.
1.
Growing With You
Your life changes – and your energy system grows with it. Thanks to FEMS, your storage system remains open for anything the future brings: new devices, new ideas, new possibilities. And all of this without lock-in, without subscriptions, without artificial limitations. Instead, you get lifelong, free updates that keep your system always up to date.
Through optional, one-time purchasable FEMS Extension Apps, you can expand your system at any time – for example with charging stations, heating rods, or other consumers. This turns your storage into a customized energy system that perfectly fits your everyday life – not something off the shelf. Thanks to the manufacturer-independent open-source approach, you remain completely free in choosing your components. FEMS grows with you – because true independence only works when systems stay open.
To the FEMS Extension Apps
2.
Thinking Ahead
FEMS ensures that your energy doesn’t just “run” – it adapts to your life. It acts intelligently, proactively and independently. Using AI-based forecasting, FEMS creates a holistic, customised energy plan for your needs, updating it every minute and incorporating all relevant factors.
FEMS analyses weather data, consumption profiles, tariffs and grid conditions in real time and makes forward-looking decisions that intelligently control your energy flows. The result: you save costs, conserve resources and reduce strain on the power grid at the same time.
3.
"With the FEMS App Relay Board, we can now control even more devices smartly — from the immersion heater to the wallbox. This allows us to use all of our solar power ourselves."
FAQ
o, that is not possible. The free FEMS App Relay Board (8-Channel TCP) is used exclusively to control consumers and devices that are already integrated via other FEMS Apps.
If you want to control devices manually or independently of FEMS Apps, you will additionally need the Relay Board (hardware) together with the paid FEMS App Manual Relay Control.
The app is currently compatible with all common models of the FENECON Home&Commercial series and the FENECON Industrial series.
For FEMS Extension Apps, please contact the specialist partner or installer from whom you purchased your storage system for pricing and ordering information.
Our home and commercial storage systems are sold exclusively through wholesalers and certified specialist partners.
