[Function usage]]: LJ the function of series proximity switch (also known as contactless travel switch) is to act when approaching metal, which is widely used in the control of machine tools and other equipment.

Differences between normally open-type (NO) and normally closed-type (NC):

First, normally open (NO) is that the signal output line is open in normal state, and there is NO signal output. It is closed only when an object is sensed, and the output signal is output. Second, normally closed (NC) is the normal state when the signal output line is closed, continuous signal output, when the object is sensed, it is disconnected and the signal is closed. The above two types are selected according to the actual needs of customers themselves.