BUSCH-JAEGER Busch-Waechter 280 KNX Presence Detector, Aluminium Silver 2CKA006132A0431

Managing lighting, heating, and security in indoor spaces often requires multiple separate sensors and complex wiring. The Busch-Waechter 280 KNX integrates presence and motion detection with brightness measurement and an IR receiver into a single flush-mounted KNX device, simplifying building automation.

Who is it for

Electricians, system integrators, and building owners who need reliable presence-based control in KNX installations for offices, corridors, or residential areas.

Main features

• 280° detection angle with 6 detection levels and 1040 switching segments for precise area coverage
• Presence detection up to Ø 10 m and motion detection up to Ø 16 m at 2.5 m mounting height
• Integrated brightness sensor (10–2000 Lux) for constant light control
• KNX bus powered (21–30 V DC), no separate power supply needed
• Flush-mounted design in aluminium silver thermoplastic housing

Specifications

• Product Type: KNX Presence Detector
• Bus System: KNX
• Detection Angle: 280°
• Mounting Type: Flush-mounted
• Colour: Aluminium Silver
• Detection Range (Presence): Max. Ø 10 m (at 2.5 m mounting height)
• Detection Range (Motion): Max. Ø 16 m (at 2.5 m mounting height)
• Recommended Mounting Height: 2.5 m
• Brightness Sensor Range: 10 - 2000 Lux
• Protection Class: IP20
• Operating Temperature: -5 °C to +45 °C
• Bus Voltage: 21 - 30 V DC (via KNX bus)
• Number of Detection Zones: 6 detection levels, 1040 switching segments
• Key Functions: Presence detection, Motion detection, Constant light control, HVAC control, Alarm functions
• Integrated Components: Brightness sensor, IR receiver
• Material: Thermoplastic
• Application Area: Indoor
• Power Consumption: Approx. 10 mA (from bus)

Tips

For optimal detection, mount the device at 2.5 m height and ensure the detection area is free of large obstacles. Use the IR receiver to integrate handheld remote controls into your KNX scenes.