Standex MK4-1A66B-500W

The MK4-1A66B-500W is a Reed Sensor, magnetically operated reed proximity switches designed for screw mounting. The sensor should be mounted on a fixed surface with the actuating magnet on the moving surface. Introduction or removal of the magnetic field determines the closing and opening of the reed switch. Used in door & window contacts, with magnetic floats for water level detection, position sensing.