FIG. 1 is an isometric view of a ceiling-mounted monitor system constructed in accordance with the present invention, the monitor system being depicted in a deployed orientation with environment shown in dashed lines forming no part of the claimed design;

FIG. 2 is a bottom view of the monitor system shown in FIG. 1;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a right-side view of the monitor system shown in FIG. 1, the left-side view being a mirror image thereof.

The broken line showing of the thickness of the base structure, the thickness of the screen structure, the shape of the neck, the shape of the base structure corners, and the shape of the screen structure's lower edge define the boundaries of the claimed design and form no part thereof.