Multi-purpose rooms are used for patient consultations, treatments, examinations and for storing medical devices. Throughout the day there are frequently times where nobody is present in these rooms, but the lights stay on and consume energy unnecessarily. Presence and daylight-dependent constant lighting control is the most energy-efficient control concept to resolve this.
In rooms with windows on one side only, energy efficiency can also be optimised using just a single presence detector. Lights near to and far from the windows are divided into two groups with a control offset between both groups. The advantage: when sufficient sunlight enters from outside, the lights close to the window can be dimmed even if 100% illuminance is still required in the area furthest from the window.