Industrial sensors that detect magnetic field changes and convert them to electrical signals. Includes Hall effect sensors, magnetoresistive sensors, and reed switches, used for position detection in NC machine tools, proximity sensing in automation equipment, and rotation speed measurement in rotating machinery. Ideal for non-contact detection in manufacturing environments as limit switch alternatives for metalworking machines, positioning control for conveyor systems, and motor rotation detection. Features excellent environmental resistance with stable operation in dusty and oil-rich machining environments. Available in analog and digital output types with easy connection to PLC control systems.