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The sensor measures the intensity of reflected light for each of the three colors RGB (red, green, and blue). The data is sent in RGB format or as a number of one of the 18 primary colors. The basic colors match the standard colors of LEGO. In practice, this means that the sensor produces a number of color pads that you find.
In offer we have a wide range of sensors for Lego Mindstorms.
The color sensor can be used, for example, to create a robot to streamline the pads or on the Rubik's cube.