The basic concept of the magnetic switch sensor

Magnetic proximity switch is a kind of proximity switch. Magnetic proximity switch is one of many kinds in the sensor family. It is made of electromagnetic working principle and advanced technology. It is a position sensor. It can change the non electric or electromagnetic quantity into the desired electrical signal through the change of the position relationship between the sensor and the object, so as to achieve the purpose of control or measurement.

The magnetic proximity switch can achieve the maximum detection distance with a small switching volume. It can detect magnetic objects (usually permanent magnets) and then generate trigger switch signal output. Because the magnetic field can pass through many non-magnetic objects, the trigger process does not necessarily need to put the target object directly close to the sensing surface of the magnetic proximity switch, but through the magnetic conductor (such as iron) transmit the magnetic field to a long distance. For example, the signal can be transmitted to the magnetic proximity switch through a high temperature place to generate the trigger action signal