The magnetic paddle flow switch is a type of mechanical flow switch. When the fluid rushes against the paddle, the paddle swings, changing the relativeposition of the magnet and the reed switch, and excites the reed switch to disconnect or not. Once the fluid is interrupted, the paddle returns to the startingposition, and the reed switch is activated again. The repulsion of the two magnets provides the force needed to reset the flow switch and the reed switchreturns to its previous state.