Ice maker and refrigerator including the same

An ice maker comprising:

• a drive motor arranged inside a casing and configured to rotate an ice-making tray or an ejector pin;
• a gear set operating in unison with the drive motor;
• an in-unison operating lever provided to operate in unison with the gear set, a magnet, which forms a magnetic field to one side thereof, being provided on the in-unison operating lever;
• and
• a printed circuit board vertically arranged to one side of the in-unison operating lever in a direction orthogonal to a bottom surface of the casing, wherein the printed circuit board is slot-inserted into a molded portion of the casing, and a Hall sensor is provided on the printed circuit board in such a manner that an electric contact point is established according to trajectory followed by the moving magnet,
• wherein the trajectory followed by the moving magnet changes in such a manner that, for positioning, an N-pole of the magnet approaches the Hall sensor earlier than an S-pole thereof and, when the magnet on the in-unison operating lever approaches a Hall sensor on the printed circuit board or is positioned to be spaced apart therefrom, an output signal changes.