It is a low-cost proximity sensor that changes the magnetic field according to the vertical, horizontal, and forward and backward movements of the magnet, causing the Reed Switch inside the sensor to produce ON and OFF actions.
Contact form:
NO contact (open type): A contact that remains normally open. When the magnet approaches, the contact turns ON and closes.
NC contact: a contact that remains normally closed. When the magnet approaches, the contact turns ON.
Conversion contact: When the magnet is close, the contact switches and outputs ON and OFF alternately.
Closed contact: Once ON or OFF, even if the magnets are far apart, the contact state is maintained until the next reverse magnetic field is given. In principle, the magnet moves horizontally in this form.
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