Introduction: Contrinex is a leading manufacturer of inductors and optoelectronic sensors. Contrinex is headquartered in Switzerland and has a unique range of products that far exceed the performance of standard equipment. Since its establishment in 1972, Contrinex has transformed from a single person's focus to a small to medium-sized multinational group with over 500 employees worldwide. Until now, it still focuses on industrial applications in the research and development, manufacturing, and sales of sensing devices.