The ornamental design for a sensor of the tirepressure monitoring system, as shown and described.
FIG. 1 is a front elevational view of the claimed design, where the left side elevational view, right side elevational view and rear view are the same as the front view;
FIG. 2 is a top plan view of the design;
FIG. 3 is a bottom plan view of the design; and,
FIG. 4 is a perspective view of the design.
The bottom plan view of item 2 does not form part of the claim design.
Features illustrated with dashed lines are not considered features of the invention being claimed, but rather illustrate an exemplary environment for the claimed features illustrated with solid lines.