The Hall-effect vane switch HKZ 121 is a contactless switch consisting of a monolithic integrated Hall-effect circuit and a special magnetic circuit hermetically sealed in a plastic package. The switch is actuated by a soft-iron vane which is passed through the air gap between magnet and Hall sensor.

Features
● Contactless switch with open collector output (40 mA)
● Static switching
● High switching frequency
● Hermetically sealed with plastic
● Unaffected by dirt, light, vibration
● Large temperature and voltage range
● Integrated overvoltage protection
● High interference immunity
● Integrated capacitors for EMI protection