B.E.G Luxomat 92149 Ceiling Occupancy DetectorB. E. G Luxomat 92149 Ceiling Occupancy Detector The BEG 92149 is an occupancy detector with a white polycarbonate finish, a ceiling motion detector with extended range, one switching channel for operating the light and a special optical system for detection of even the smallest movements. This detector features an alarm pulse with protected triggering only if there are three movements recognised within 9 seconds.