Proximity Sensors are sensors that can detect the distance and position of an object without contact, sensing its presence or changes in distance without direct contact with the object. It works by transmitting and receiving specific forms of energy, such as infrared, ultrasonic, electromagnetic waves, etc. When the object enters the detection range of the sensor, it will reflect or interfere with these energies, and the sensor can accurately calculate the position and distance of the object by analyzing the time and intensity of the reflected signal, so as to achieve automatic control and monitoring. This non-contact detection method not only avoids physical wear, but also improves the accuracy and reliability of the detection.

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