Proximity switch, also known as proximity sensor, proximity position switch is a position switch that can be operated without mechanical contact between moving parts.

When the moving object is close to the switch to a certain position, the switch sends a signal to reach the stroke control and automatic counting control of a non-contact non-contact position switch.

It has induction head, high frequency oscillator, amplifier and housing composition.

CONCEPT INTERPRETATION of NPN PNP:

NPN: Indicates a common positive voltage and outputs a negative voltage.

PNP: Indicates common negative voltage, output positive voltage

NPN NO: Indicates that it is normally open under normal conditions, and the black line outputs a negative voltage signal when an object is detected

NPN NC: Indicates that the black line is an output negative voltage signal under normal conditions, and when an object is detected, the output signal is disconnected

PNP NO: Indicates that it is normally open under normal conditions, and the black line outputs a positive voltage signal when an object is detected

PNP NC: Indicates that the black line is an output positive voltage signal under normal conditions, and when an object is detected, the output signal is disconnected