FIG. 1 is a perspective view of a first embodiment of a sensor according to our novel design;
FIG. 2 is a front view thereof;
FIG. 3 is a side view thereof; and
FIG. 4 is a rear view thereof.
FIG. 5 is a perspective view of a second embodiment of the sensor according to our novel design;
FIG. 6 is a front view thereof;
FIG. 7 is a side view thereof; and
FIG. 8 is a rear view thereof.
FIG. 9 is a perspective view of a third embodiment of the sensor according to our novel design;
FIG. 10 is a front view thereof;
FIG. 11 is a side view thereof; and
FIG. 12 is a rear view thereof.
FIG. 13 is a perspective view of a fourth embodiment of the sensor according to our novel design;
FIG. 14 is a front view thereof;
FIG. 15 is a side view thereof; and,
FIG. 16 is a rear view thereof.