B.E.G. Brück PD4N-KNXs-BA-DE KNX Presence Detector, Flush-Mount Ceiling, 360°, White 93535

The PD4N-KNXs-BA-DE from B.E.G. Brück stands out with its ultra-flat design, protruding only about 5 mm from the ceiling, making it nearly invisible in modern interiors. It combines three independent channels for lighting, HVAC, and presence in one compact KNX device, eliminating the need for multiple sensors.

Highlights

• 360° detection with a presence area of Ø 8 m and movement area of Ø 24 m at 2.5 m mounting height
• Three channels: light, HVAC, and presence for comprehensive room automation
• Integrated light measurement from 10 to 2000 Lux for constant light control
• Flush-mount ceiling installation with a cut-out diameter of 60 mm
• Powered directly via KNX bus (21-32 V DC), no external power supply needed

In daily use

Configure the detector for semi-automatic or fully automatic operation, and use its self-learning switch-off delay to adapt to room usage patterns. Scene control and logic functions allow integration into complex KNX projects, while the short presence function prevents false triggering. The UV-stabilised polycarbonate housing in white (RAL 9010) ensures durability and a discreet appearance.

Full specifications

• Bus system: KNX
• Sensor technology: Passive Infrared (PIR)
• Detection angle: 360°
• Mounting type: Flush-mount ceiling
• Recommended mounting height: 2.5 m
• Detection area (presence): Ø 8 m at 2.5 m height
• Detection area (movement): Ø 24 m at 2.5 m height
• Light measurement range: 10 - 2000 Lux
• Number of channels: 3 (Light, HVAC, Presence)
• Operating voltage: Via KNX Bus (21-32V DC)
• Power consumption: 0.5 W
• Protection class: IP20
• Operating temperature range: -25 °C to +50 °C
• Colour: White (RAL 9010)
• Housing material: UV-stabilised polycarbonate
• Installation cut-out diameter: 60 mm
• Visible height from ceiling: Approx. 5 mm

Final note

For KNX integrators seeking a discreet, multi-channel presence detector with advanced control functions, the PD4N-KNXs-BA-DE delivers reliable performance in a minimal footprint.