This DC 6-36V M12 Inductive 4mm PNP-NO Proximity Sensor Switch is a component widely used in the automatic control industry for detecting, controlling, and non-contact switching. When the proximity switch is close to some target object, it will send out a control signal.

A proximity sensor switch is a type of electronic sensor that activates or deactivates a device or system when an object comes within a certain distance of it. These sensors are commonly used in a variety of applications, including door openers, automated vending machines, and industrial automation systems.

Proximity sensor switches can be classified into different types based on the technology they use to detect the presence of an object. Some common types of proximity sensor technologies include inductive, capacitive, ultrasonic, and photoelectric.