Controller unit

FIG. 1 is a perspective view of a controller unit;

FIG. 2 is a front view of the controller unit;

FIG. 3 is a rear view of the controller unit;

FIG. 4 is a top view of the controller unit;

FIG. 5 is a bottom view of the controller unit;

FIG. 6 is a left side view of the controller unit; and,

FIG. 7 is right side view of the controller unit.

The broken lines are used to show portions of the controller unit that do not form part of the claimed design.