The ornamental design for a rotary switchmodule, as shown and described.
FIG. 1 is an image of a perspective view of the rotary switch module.
FIG. 2 is a first side view of the rotary switch module.
FIG. 3 is a second side view of the rotary switch module.
FIG. 4 is a front view of the rotary switch module.
FIG. 5 is a back view of the rotary switch module.
FIG. 6 is a top view of the rotary switch module; and,
FIG. 7 is a bottom view of the rotary switch module.
The ornamental design which is claimed is shown in solid lines in the drawings. The portions of the design shown in broken lines or dashed lines are included for the purpose of illustrating environment and form no part of the claimed design.