Lighting (today mostly used Energy Efficient Lighting) in the building management can be divided into three areas:
From the point of the control, exterior lighting of a building is a typical example of logic control as it is turned on at specific time of day or when natural light intensity drops below the limit, or even manually. In order to reduce electricity consumption for lighting in common areas without natural lighting, it is possible to introduce regulation based on the signal from motion sensors and switch off control with predefined time delay. Room lighting is designed similarly as exterior lighting with logic control. To improve the efficiency of the system, zonal lighting is used for rooms with large area, or lighting intensity control is introduced.