DALI-2 sensors for luminaire and ceiling installation: combined light and presence sensors (LS/PD) with passive-infrared detection, in versions for ordinary ceilings as well as high-bay warehouses and production halls. They draw power from the DALI bus, measure light from 5 to 2,000 lux, come with a shutter to shape the detection area, and several can share one DALI line in any DALI-2 compatible system.