The magnet is now brought downward into the upper left lobe, passing through it and then passing through the lower left lobe. Here the contacts will close when the magnet reaches the solid pull-in line of the upper left lobe. Continuing downward with the magnet, the contacts will open when the magnet passes through the dotted drop-out line. Continuing further downward with the magnet, it will enter and cross the solid pull-in line of the lower left lobe closing the contacts. As the magnet continues its trek downward it crosses the drop-out dotted lines and the contacts open.