Synco RX..-room controllers / Synco RD..-room thermostats

RXL controller – the favorably priced HVAC controller range for individual rooms

RXL controller

RXL controller is an innovative range of room controllers and room units for cost-effective room management. Data communication is based on a proprietary Synco™ and DESIGO™ bus, which provides the transition to BACnet. RXL controller thus fits into the overall expandable modular system, ensuring long-term cost-effectiveness.

Commissioning and parameter setting of the RXL controllers are carried out with the software tool, or directly on the controller via the QAX34.3 room operating unit used as HandyTool. The parameters can be set via the room unit with no need for a network connection. These controllers also communicate with the Synco 700 controller.

Key features:

  • Proprietary communication

  • Applications for heating, cooling, ventilation and air conditioning

  • Economic integration into Synco and DESIGO

  • Reduced training effort thanks to preloaded application set

  • Easy engineering with ACS commissioning tool and HandyTool


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RXB controller – the open HVAC controller range for individual rooms based on KNX

RXB controller

The RXB controller range of products performs all HVAC functions while - for the control of lights and blinds - various devices are available from different manufacturers. This third-party equipment can be easily combined with RXB controller thanks to the clarity of the KNX specification, the certification procedure, and the use of ETS tool software.

Key features:

  • Energy savings of up to 14% ensured by eu.bac-certified products with high control accuracy

  • Economic communication solution

  • Applications for heating, cooling, ventilation and air conditioning

  • Efficient integration into Synco and DESIGO

  • Open communication based on KNX and applications certified by the Konnex® Association Suited for use in connection with third-party products

  • Reduced training effort thanks to preloaded application set

  • Easy engineering with the ACS commissioning tool or ETS3 Professional and HandyTool


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RDU.. – room thermostats

RDU.. - room thermostats

The room temperature controller is tailored to control the room temperature in individual rooms of ventilation or air conditioning plants that are heated or cooled as well for valves and damper actuators with 0-10 V or ON/OFF demand controls.

Typical use:

  • Control of 3-position valve or damper acuators


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RDF.. – room thermostats

RDF.. - room thermostats

The digital RDF room thermostats are tailored for 2-pipe, 2-pipe plus electric heater and 4-pipe fan coil applications with automatic heat/cool change over. The desired room temperature is selected via push buttons on the front of the thermostat.

Typical use:

  • For control of the room temperature in individual rooms that are heated or cooled with 2-pipe fan coil units

  • For the control of rooms that are cooled with DX type equipment

  • For opening or closing a valve and for switching a 3-speed fan


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RDG.. – room thermostats

RDG.. - room thermostats

The RDG.. room thermostats are very versatile. Thanks to their large display and intuitive operating concept with setting knob and large buttons, the units are extremely user-friendly and the backlit display even allows the unit to be operated in the dark. The required application can simply be selected via DIP switches before mounting the unit. The RDG uses for the room temperature control either a two-position, P or PI algorithm.

Typical use:

  • Control of chilled or heated ceiling with electrical heater, radiator, or floor heating

  • 2-stage heating or cooling applications

  • Additional function like remote temperature sensing for return air control, operating mode switchover to command energy saving mode, floor temperature limitation, dew point monitoring etc.


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