BEG PD4N-KNXs-ST-DE KNX Ceiling Presence Detector with PIR Sensor, 360°, White

The BEG PD4N-KNXs-ST-DE redefines presence detection by merging a discreet flush-mount profile with advanced constant light control and a self-learning switch-off delay. Unlike basic PIR sensors, it integrates logic modules and short presence detection, enabling precise automation of lighting and HVAC in offices, meeting rooms, and corridors. Its 360° detection pattern and KNX bus connectivity make it a versatile choice for modern building automation.

Highlights

• 360° PIR detection with presence range up to Ø 8 m and motion range up to Ø 24 m at 3 m height
• Integrated light sensor (10–2000 Lux) for constant light control and daylight harvesting
• Self-learning function automatically adjusts switch-off delay based on usage patterns
• Logic modules (AND, OR, XOR) and short presence function for flexible automation scenarios
• Flush ceiling mount with only 83 mm visible diameter and 24 mm installation depth
• KNX bus powered—no external power supply needed
• Optional IR remote control for commissioning and parameter adjustment

In daily use

Installed flush in the ceiling, the PD4N-KNXs-ST-DE continuously monitors the area for presence and ambient light. When someone enters the room, it can switch on lighting via KNX actuators and adjust brightness to maintain a constant illuminance level. The self-learning function optimizes the switch-off delay over time, reducing energy waste. In HVAC control, the detector can signal occupancy to adjust heating or ventilation. The short presence function allows for brief activations, ideal for corridors or storage areas.

Full specifications

• Detection technology: Passive Infrared (PIR)
• Bus system: KNX
• Mounting type: Ceiling flush mount
• Detection angle: 360°
• Presence detection range: Ø 8 m (at 3 m height)
• Motion detection range: Ø 24 m (at 3 m height)
• Recommended installation height: 2.5 - 3 m
• Integrated light sensor: Yes (10 - 2000 Lux)
• KNX functions: Lighting control, HVAC control, Presence status
• Power supply: KNX Bus
• IP rating: IP20
• Operating temperature: -25 °C to +50 °C
• Colour: White
• Housing material: UV-stabilised Polycarbonate
• Installation depth: 24 mm
• Mounting hole diameter: 68 mm
• Visible diameter: 83 mm
• Special features: Constant light control, Self-learning function, Logic modules, Short presence
• Remote control capability: Yes (via optional IR remote)
• Product series: PD4N

Final note

Engineered for efficiency and flexibility, the BEG PD4N-KNXs-ST-DE is a compact yet powerful KNX presence detector that adapts to your space and usage patterns, delivering intelligent automation without compromise.