theben DU 1 KNX 1-Way Flush-Mounted Dimming Actuator (4942570)

Description

Introduction

The theben DU 1 KNX (Item no. 4942570) is a high-performance 1-way flush-mounted dimming actuator designed for modern KNX building automation systems. Engineered with KNX Data Secure support, this device ensures protected, tamper-proof communication across bus networks while providing precise illumination control for residential and commercial installations. This device is part of our KNX system components range.

Featuring an optimized dimming output, the actuator is compatible with dimmable LEDs (trailing edge), incandescent lamps, halogen lamps, and dimmable transformers. Its compact flush-mounted form factor makes it ideal for direct installation behind standard switches or inside junction boxes where space is at a premium.

Key Features

• 1-channel dimming output designed for flexible lighting control.
• Support for KNX Data Secure protocol to safeguard network telemetry.
• Optimized dimming curve for dimmable energy-saving lamps, LEDs (trailing edge), incandescent, and halogen lamps.
• Flush-mounted installation type suitable for standard electrical boxes.
• Wide operating ambient temperature range from -5°C to 45°C.
• Screw terminal connection for load wiring alongside standard KNX bus terminal.

Benefits

• Provides enhanced network cybersecurity with integrated support for KNX Data Secure communication.
• Delivers smooth dimming performance specifically optimized for trailing-edge LED lamps, energy-saving lamps, and halogen loads.
• Facilitates versatile flush-mounted installation in space-constrained junction boxes and back-boxes.
• Operates efficiently directly from the KNX bus voltage with low current consumption (≤4 mA).
• Simplifies electrical wiring using reliable screw terminals for main load connections and a standard KNX bus terminal.

Technical Specifications

Specification	Value
Operating voltage KNX	Bus voltage, ≤4 mA
Incandescent/halogen lamp load	250
LED lamp (trailing edge)	250
Installation type	Flush-mounted
Type of connection	Terminal screws | Bus connection: KNX bus terminal
Number of channels	1
Hand book	PDF
Information Notice EU Data Act	PDF
CE declaration of conformity	PDF
Data sheet	PDF
Brochure	PDF
Ambient temperature	-5°C … 45°C
Operating instructions	PDF
KNX-Database (Single Product)	ZIP
KNX-Database (all products)	ZIP

Applications

• Decentralized lighting control integrated behind switches or in ceiling junction boxes.
• Secure KNX smart home and commercial building installations requiring encrypted bus communication.
• Retrofitting or expanding existing KNX systems with single-channel dimming capability.

Installation Notes

• Ensure the device is installed in a flush-mounted enclosure rated for the local ambient operating temperature (-5°C to 45°C).
• Connect the KNX bus cable using the standard KNX bus terminal and secure load wiring with the integrated terminal screws.
• Verify bus voltage power requirements (≤4 mA) within overall line power calculations during engineering and commissioning.

Developer Resources

• KNX-Database ZIP files available for single product and full line integration
• Data sheet, Brochure, and Operating instructions in PDF format
• CE declaration of conformity and Information Notice EU Data Act in PDF format

FAQ

What is the official SKU and item number for this theben dimming actuator?

The official item number and SKU for the theben DU 1 KNX dimming actuator is 4942570. Explore more theben automation devices for professional building automation projects.

Does the theben DU 1 KNX support secure bus communication?

Yes, the DU 1 KNX supports KNX Data Secure to protect telegrams and commissioning data. For certificates and current technical files, refer to the manufacturer technical documentation.

What load types are compatible with the DU 1 KNX dimming output?

The actuator offers optimized dimming for dimmable energy-saving lamps, trailing edge LEDs, incandescent lamps, halogen lamps, and dimmable transformers.

What is the operational ambient temperature range for this device?

The actuator operates reliably in ambient temperatures ranging from -5°C to 45°C.

What is the exact product model?

The order/model code for this page is 4942570. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by theben.

Conclusion

The theben DU 1 KNX (4942570) delivers a reliable, secure, and compact solution for single-channel lighting control across KNX networks. Featuring KNX Data Secure support and versatile lamp compatibility, it serves as an excellent component for professional building automation projects. Installers and system integrators can review our dealer and project support options.

System integrators and procurement specialists can specify item 4942570 with confidence to satisfy exacting project requirements and streamline commissioning in ETS.