Light Level and Sun/Sky Condition Sensors

When attempting to control the degree of artificial and natural light within a room it is necessary to employ sensors that measure internal and external lighting conditions.  Various configurations of light sensors are available and these can be categorized within the following groups:

Other types of sensors such as quantum sensors also exist, but these tend to be used for biological applications as they measure photo-synthetically active radiation.

Light sensors can be made up of a variety of sensor types depending upon the accuracy required for the application.  These types include: