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Light Sensor

A light sensor is used to measure the brightness of daylight or artificial lighting, which is why they are often referred to as brightness sensors. Other terms frequently used synonymously include: photodetector or optical detector. Ultimately, it is an electronic component that converts light into an electronic signal using the photoelectric effect. First, a specific function is assigned to the light sensor based on a particular light intensity. If the intensity of the light around the sensor then changes—for example, because twilight is setting in outside—the sensor detects this and converts it into a signal, which in turn causes, for example, a lamp to shine brighter. Light sensors are primarily used outdoors, where they are components of twilight sensors or entire lighting control or smart lighting systems. However, they are also used indoors—particularly in office buildings—for applications such as constant light control, which ensures that the lighting level is always maintained at an exact, constant level.

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