The ornamental design for a temperaturesensor, as shown and described.
FIG. 1 is a perspective view of a temperature sensor, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
Dashed lines in the drawings denote features of the article that are included for the purpose of illustrating context, but form no part of the claimed design. However, embodiments are contemplated in which one or more of the ornamental features shown in broken lines are claimed.