The wholesale proximity switch is used in the industrial automation control system to realize detection, control and complete contact with the output link. A new type of switching element; the photoelectric switch utilizes the occlusion or reflection of the light beam by the detected object, and the circuit is gated by the synchronous circuit to detect the presence or absence of the object.

The difference between photoelectric switch and wholesale proximity switch:
1. Different sensing materials
Photoelectric switch: It can sense any material and has a wider range of use.
Wholesale proximity switch: It can only sense metal materials, and cannot sense objects such as people and plastics.
2. Different detection methods
Photoelectric switch: The transmitting tube emits modulated light, and the receiving tube detects whether it receives this light to determine whether there is an object.
Wholesale proximity switch: The presence of an object is judged by the sensing of the detection head of its head.
3. The scope of activities is different
Photoelectric switch: regardless of metal and non-metal, the scope of use is more flexible.
Wholesale proximity switch: easily limited by space constraints and object material, it only has induction to metal.
4. The principle is different
Photoelectric switch: It works according to the principle of infrared emission and reception.
Wholesale proximity switch: It works according to the principle of high frequency oscillator.