Inductive proximity switch is a kind of detection element. Through different physical principles, it makes non-contact induction on ferromagnetic metal objects, so as to detect whether the detected object reaches the effective induction range of the sensor, and output a certain form of signal. This kind of sensor has relatively low cost, and common machinery and equipment are mostly made of metal materials, so it is widely used in the field of equipment manufacturing, such as detecting distance, detecting structure in place, detecting the presence of objects, etc. SENTINEL can provide inductive proximity switches with various shapes and sizes to meet the diversified needs of customers.