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OPEN SRU Single Room Controller with BACnet MS/TP

Whether for office or hotel rooms, in wellness areas, hospitals or schools/universities: the OPEN SRU (Single Room Unit) takes over the entire room control in different types of buildings.

You decide whether to freely program the SRU yourself or to deploy the ready-to-use DEOS solution packages for your project. The macro library, based on the requirements of VDI 3813 (German Engineering Federation), reduces your programming effort and can be purchased in addition.

The room controller can be used for integral control of HVAC, shading and lighting in all areas of the room automation. It takes the signals directly from sensors and actuators over the standardised MODBUS or KNX interface. The 8 universal inputs, 4 universal outputs and 4 digital outputs provide the flexibility to cover the required range of tasks: temperature, presence detector, air quality, set-point, window contacts, valves or volume flow controller.

OPEN SRU – NOW with MODBUS

When using the SRU with conventional MODBUS room control units (push button variants) or the latest touch control units, you can also employ products from different manufacturers, thus achieving a high degree of flexibility.

The SRU with MODBUS offers high operating safety as it continues to control the room, even in stand-alone operation (e.g. if the network fails).


Connect the OPEN SRU to any BACnet automation stations (OPEN EMS) via BACnet MS/TP or integrate it in a BACnet building management system (BMS) such as OPENweb. This makes the OPEN SRU with MODBUS a cost-effective solution for new construction projects as well as for building renovations.

OPEN SRU at a glance

  • MODBUS RTU with up to 50 data points
  • BACnet MS/TP with up to 250 BACnet objects
  • LED displays for the operating states as well as the bus status on the device
  • Compact construction – e.g. for suspended ceiling solutions
  • High operating safety – controls even in stand-alone operation
  • Energy saving – heats, cools, ventilates and illuminates only when someone is present or when explicitly requested
  • Universally applicable – for offices, hotels, wellness, hospitals, etc.


OPEN SRU for room automation

In particular, the OPEN SRU Single Room Unit offers a high level of flexibility in room automation applications. The Room Automation Solutions from DEOS AG take advantage of this flexibility. The system is easily and quickly engineered using our specially developed OPENproject tool. You can find a detailed introduction of it on our homepage under Programming Tools.


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.

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