GIRA Presence/Motion Detector 239902 Compact

Managing lighting and HVAC in rooms with intermittent occupancy can waste energy and reduce comfort. The GIRA Presence/Motion Detector 239902 Compact solves this by automatically detecting presence and motion, enabling intelligent control of lighting, heating, and ventilation via KNX.

Who is it for

This compact ceiling-mounted sensor is ideal for offices, meeting rooms, corridors, and residential spaces where automated lighting and climate control are desired. It suits electricians and system integrators working with KNX installations.

Main features

• Presence and motion detection with 360° coverage
• Detection range up to 9 m diameter for presence and 24 m for motion at 3 m mounting height
• Integrated light sensor (10–2000 lux) for constant light control
• Three switching channels: light, presence, HVAC
• Adjustable delay time from 10 seconds to 120 minutes
• Self-learning delay and short presence function
• Scene control and HVAC control via KNX
• Flush-mounted ceiling installation, IP54 protection

Specifications

• Sensor type: Passive Infrared (PIR)
• Bus system: KNX
• Mounting type: Ceiling (flush-mounted)
• Detection angle: 360°
• Recommended mounting height: 2–3.5 m
• Operating voltage: KNX bus voltage (21–30 V DC)
• Power consumption: approx. 0.5 W
• Ambient temperature: -15 °C to +50 °C
• Housing material: UV-stabilised polycarbonate
• Colour: White

Tips

For optimal detection, mount the sensor at a height between 2 and 3.5 metres in a central ceiling location. Use ETS software to configure channels and adjust light thresholds and delay times to match room usage patterns.