Light sensor
A light sensor serves to measure brightness or artificial lighting, which is why one often speaks of brightness sensors. Other terms that are often used synonymously to do this are: photodetector or optical detector. Ultimately, it is an electronic component that converts light into an electronic signal using the photoelectric effect.
The light sensor is initially assigned a function paired with a certain light intensity. If the strength of the light changes in the vicinity of the sensor, for example, because the dawn starts outside, it perceives it and converts it into a signal, which in turn leads to this, for example, that the lamp lights up.
Light sensors are then used primarily outdoors and are part of twilight sensors or entire lighting control or smart light systems. But also indoors, especially in office buildings, they are used, among other things, for constant light regulation in order to keep the lighting level exactly constant.
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