Non contact sensors require the use of magnetic materials. Such as Hall sensors, car position sensors, motor speed sensors, weighing sensors, security alarm sensors, magnetostrictive displacement sensors, car brake sensors, car wheel speed sensors, magnetic control sensors, speed sensors, water flow sensors, inductive magnetic sensors, inductive sensors, etc.

Sensors work together with magnetic steel to detect the size of magnetic fields, or use this principle to add magnetic materials to the sensor to detect ferromagnetic materials.

Different sensors use different magnets, including sintered neodymium iron boron materials, injection molded magnets, ferrite magnetic rings, and bonded neodymium iron boron materials