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OPEN 4100 EMS BACnet

The OPEN 4100 EMS (Energy Management Station) is our powerful product for medium to large-scale projects. As a native BACnet controller, it exchanges measurement and control information to all sensors and actuators for optimum operation. 

You can also configure 2 DEOS OPEN 4100 EMS controllers as a hot standby controller in a redundant system for maximum operational dependability.


It offers you:

  • BACnet protocol according to the ANSI/ASHRAE standard
  • up to 4000 BACnet objects
  • Testing according to DIN EN 16484-6 and the BTL/WSP lab test plan
  • Certification by the BACnet Interest Group Europe
  • Fraport (Frankfurt Airport) BACnet approval
  • BTL listed
  • AMEV attestation with profile B
  • up to 4000 physical data points.

With this number of data points, one OPEN 4100 EMS may be sufficient for your project. This saves planning and installation expenses and requirements - the bottom line: it saves you costs.



Variant C1




Variant C2
  • 2 CAN busses, up to 198 DEOS OPEN IO modules can be connected.
  • CAN-HSB safety ring bus can be activated to increase safety.


Trend-setting new function:
the second Ethernet port and the switch function save you both time and money.

With its integrated Ethernet switch, OPEN EMS is considerably easier to network: thanks to the versatile switch function – instead of a simple HUB function – that saves you additional external switching devices and their costs.

The second Ethernet port of the OPEN EMS allows you to wire several controllers in a daisy chain topology. This makes it easy to set up your Ethernet network, eliminating star-shaped central switch configurations. As a result, you can wire controllers directly, thus reducing wiring requirements by up 75% and saving you both time and money.

You can still use external switches as necessary. Here, the second Ethernet port offers you a key advantage: with Ethernet wiring, your service technician can work through the second interface without any Ethernet interruptions. He simply connects his equipment through the second Ethernet port.

DEOS leads the pack with these proven innovative IT trend-setting solutions for the MSR market.

Additional highlights:

  • The new second Ethernet port allows easy, cost-effective serial networking (daisy chain configuration) and continuous service
  • Power PC processor
  • Linux OS
  • Freely programmable
  • Supports all important protocols
  • Available as a top-hat rail mounted device with high-quality metal housing


Additional technical information:

In our free download area, we provide you with certificates, brochures, flyers, the DEOS Product Catalog and further information concerning our products.

All data sheets are available for our partners and customers in the DEOS partner section.

Downloads Partner Section