The proximity switch transmits information about the proximity of nearby objects to the sensor. The object is not immediately in touch with the sensor.
More details regarding the proximity sensor may be found in other articles in this section.
The sensor has a longer working life due to its non-contact feature compared to sensors that directly touch objects to detect them. Because of this, there is no degradation or injury when something is recognised without being touched.
When deciding on the type of proximity sensor, the features of the object to be detected are taken into account. Plastic things can be picked up by a capacitive proximity sensor, but an inductive proximity sensor requires a ferrous metal object in order to work.
Both metallic and non-metallic items can be recognised by a capacitive switch, a non-contact electrical switch.
The components consist of glass, paper, metal ,Other articles in this section may provide more information about the proximity sensor.
here this blog get to know proximity sensor .