Detection area (at mounting heights of 2.5 m, 3 m, and 4 m): circular. Sitting persons Ø: max. 5 m, max. 6.5 m, and max. 9 m. Walking persons Ø: max. 6.5 m, max. 8 m, and max. 10.5 m. Installation height 16 mm. With 4 channels. For dimming and regulating brightness to a defined value within a designated detection area. HVAC function for controlling heating and/or cooling systems as well as ventilation systems within the designated detection area. Sensor application with 2-stage shut-off function. Sensor application with integrated monitoring function. Constant light controller with up to 2 independent channels. Constant light controller with max. 2 outputs for brightness-dependent dimming and regulation of two light bands in the room. Integrated object-room temperature controller. 10 freely programmable IR channels (blue and/or white). Includes 5 logic channels (logic gates, gate, delay, and stairwell light). Evaluation via internal brightness sensor. Weighting of up to 2 external brightness values and the internal brightness sensor is possible. The programming button can be activated with the IR remote control. With integrated KNX bus coupler. Suitable for suspended ceilings with a panel thickness of 9 to 25 mm. Cut-out size: Ø 68 mm. Suitable for surface mounting in combination with a surface-mounted housing. Not compatible with British Standard and VDE flush-mounted boxes. Recommendation: HaloX® 100 from Kaiser or IBTronic H120-68 from Spelsberg. If needed, please refer to the current online catalog for software and description. HVAC = Heating, Ventilation, Air Conditioning. Type: 6131/21-24. Presence detector.