How to repair the malfunction of the tact switch

The proximity sensor is a device that can detect the distance between two objects and control or drive a certain actuator according to a preset limit value. It has a wide range of uses in many fields. Next, take a look at what are the main applications of proximity sensors?
　　①Used in aviation and aerospace technology to avoid collisions of flying objects;
　　②In daily life, such as automatic doors in hotels, restaurants, and garages;
　　③In terms of security and anti-theft, such as data files, accounting, finance, museums, vaults and other important places, there are usually anti-theft devices composed of various proximity switches;
　　④In measurement technology, such as length and position measurement; in control technology, such as displacement, velocity, acceleration measurement and control, a large number of proximity sensors are also used.

Proximity sensor is a function set by using its sensing ability. It is also a new technology and new method. It is used in industry and agriculture, electronics industry, and pharmaceutical industry. It is also applicable because of its high temperature resistance and radiation resistance. Extremely strong and passable, the feeling of surrounding temperature and the feeling of surrounding objects, as well as the feeling of the same type of sensor, to produce influence and interaction, and it is also widely used in the occasion of electrostatic capacity type.