However even photoelectric sensors can 't do without Proximity. They give an early warning of an approaching problem and devise preventive measures to improve safety. A proximity sensor functions by emitting an electromagnetic field or a beam of infrared light and then analysing any changes in the field or beam reflection to detect the presence of an object. The main functions of a proximity sensor include but are in no way limited to detecting the position of parts, counting, and use in safety applications. Technological characteristics may vary, but adjustable sensitivity, and a range of output types are common features. From manufacturing to logistics, these sensors have a wide range of applications. In contrast to this, a photoelectric sensor uses light to detect the presence or absence of an object. A light source, a sensor, and a receiver make up a typical one. If the object breaks or reflects the light beam, then it in turn will trip a fault signal. The major functions of the photoelectric sensor include object detection, edge detection, and diameter measurement. With features like a high degree of precision and the ability to detect transparent objects, the photoelectric sensor is widely used in industries ranging from packaging to automation and traffic control systems itself.