B.E.G. Brück Presence Detector KNX Flush-Mounted White PD4N-KNXs-BA-UP 93536,0

For building automation professionals installing KNX systems in offices, conference rooms, or open-plan areas, this flush-mounted presence detector provides reliable occupancy-based control of lighting and HVAC. The PD4N-KNXs-BA-UP combines four PIR sensors with an integrated light sensor to deliver precise presence detection and constant light control.

Key specifications

• Detection: 360° coverage, up to 8 m diameter at 3 m mounting height
• Technology: Passive infrared (PIR), 4 sensors, 112 switching segments
• Bus system: KNX (21-32 V DC, approx. 5 mA consumption)
• Mounting: Flush-mounted (UP), recommended height 2.5–3 m
• Colour: White (RAL 9010), housing material UV-stabilised polycarbonate
• Protection: IP20, indoor use, operating temperature -25 °C to +50 °C
• Functions: Constant light control, HVAC control, presence detection, scene control, logic functions, short-term presence
• Configuration: ETS software, master/slave capable

Why choose it

With 112 switching segments and four PIR sensors, this detector offers fine-grained detection zoning for precise automation. Its integrated light sensor enables constant light control, reducing energy consumption while maintaining comfort. The KNX bus connection simplifies installation and integration into existing KNX networks.

Ideal use cases

• Office lighting and HVAC automation based on occupancy
• Conference rooms requiring scene control and presence-based activation
• Open-plan areas needing multi-zone detection from a single device
• Corridors and stairwells where short-term presence detection is beneficial

Good to know

The detector is configured via ETS software and can operate as a master or slave in larger installations. Its UV-stabilised polycarbonate housing ensures durability in indoor environments. The white RAL 9010 finish blends seamlessly with standard ceiling designs.