Sensor

The design is the visual features of the MOTION SENSOR shown in the drawings, whether those features are features of shape, configuration, ornament, pattern, or a combination of any of those features. The portions of the article shown in stippled lines do not form part of the design. Drawings of the design are enclosed, in which: FIGURE 1 is a front perspective view of a MOTION SENSOR; FIGURE 2 is a left side view of the MOTION SENSOR of Figure 1; FIGURE 3 is a front view of the MOTION SENSOR of Figure 1; FIGURE 4 is a right side view of the MOTION SENSOR of Figure 1; FIGURE 5 is a rear view of the MOTION SENSOR of Figure 1; FIGURE 6 is a top view of the MOTION SENSOR of Figure 1; and FIGURE 7 is a bottom view of the MOTION SENSOR of Figure 1.