Description
Introduction
The theben LUXA 103 S360-28 KNX DE WH (Item no. 1039073) is a high-performance passive infrared (PIR) presence detector designed specifically for ceiling installation in indoor suspended ceilings. Engineered for integration into professional KNX bus systems, this detector features native KNX Data Secure technology to safeguard bus communication against unauthorized access and tampering. This device is part of our professional KNX Sensors range.

Offering a 360° rectangular detection zone that covers up to 140 m² (28 x 5 m) at mounting heights of 2.5 m to 3 m, this sensor provides precise motion and light monitoring for commercial, educational, and institutional environments. Equipped with 2 light channels and 2 dedicated HVAC presence channels, it allows system integrators to optimize energy efficiency across both lighting and climate control systems simultaneously.
Key Features
- 360° passive infrared (PIR) rectangular detection profile.
- Supports mounting heights from 2.0 m up to 4.0 m.
- Requires a standard 68 mm cut-out for suspended ceiling installation.
- Direct bus connection using a standard KNX bus terminal.
- Configurable HVAC presence switch-on delay from 10 seconds to 30 minutes, or inactive.
- Detection coverage of 140 m² (28 x 5 m) at 2.5 m and 3.0 m, scaling to 104 m² (26 x 4 m) at 3.5 m.
Benefits
- Native KNX Data Secure integration protects building automation communication from unauthorized tampering.
- Large rectangular detection area of 140 m² (28 x 5 m) ideal for covering corridors and long rooms efficiently.
- Multi-channel functionality featuring 2 independent light channels and 2 dedicated HVAC control channels.
- Mixed light measurement ensures reliable ambient lighting regulation and energy savings.
- Transparent environmental metrics with verified GWP values (Cradle-to-Gate: 3.22 kg CO₂ eq, Cradle-to-Grave: 19.53 kg CO₂ eq).
Technical Specifications
Applications
- Indoor suspended ceiling installations in office corridors, hallways, and open-plan spaces.
- Commercial KNX building automation projects requiring integrated lighting control and HVAC regulation with KNX Data Secure compliance.
Installation Notes
- Designed for flush/recessed mounting in suspended ceilings with a 68 mm cut-out.
- Connects directly to the KNX bus topology via a standard KNX bus terminal.
- Recommended installation height ranges between 2.0 m and 4.0 m with diagonal movement orientation.
Developer Resources
- Data sheet (PDF) and product handbook (PDF) available for system design and ETS programming.
- EU Data Act Information Notice, CE Declaration of Conformity, and Product Brochure (PDF) available for procurement compliance.
FAQ
What is the detection area of the theben LUXA 103 S360-28 KNX DE WH?
At a 2.5 m to 3.0 m mounting height, it provides a rectangular 360° coverage of 140 m² (28 x 5 m). At 3.5 m mounting height, the coverage is 104 m² (26 x 4 m). Explore more theben KNX solutions for professional building automation projects.
Does this sensor support KNX Data Secure?
Yes, the LUXA 103 S360-28 KNX DE WH natively supports KNX Data Secure for encrypted bus communication. For certificates and current technical files, refer to the official theben product page.
What channels are available for control?
The device features 2 independent light channels and 2 dedicated presence channels for HVAC control.
What ceiling cut-out dimension is required?
Installation requires a standard 68 mm ceiling cut-out for suspended ceiling mounting.
What is the exact product model?
The order/model code for this page is 1039073. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by theben.
Conclusion
The theben LUXA 103 S360-28 KNX DE WH (1039073) combines structured rectangular PIR detection, KNX Data Secure protection, and multi-channel control, making it an ideal choice for modern ceiling-integrated building automation solutions. Installers and system integrators can review our become a KNX dealer options.








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