The ornamental design for a floodsensor, as shown and described.
FIG. 1 is a first top perspective view of a flood sensor, according to our new design;
FIG. 2 is a second top perspective view of the flood sensor;
FIG. 3 is a first bottom perspective view of the flood sensor;
FIG. 4 is a second bottom perspective view of the flood sensor;
FIG. 5 is a left side elevational view of the flood sensor;
FIG. 6 is a right side elevational view of the flood sensor;
FIG. 7 is a top side view of the flood sensor;
FIG. 8 is a bottom side view of the flood sensor;
FIG. 9 is a front side elevational view of the flood sensor; and,
FIG. 10 is a rear side elevational view of the flood sensor.
The broken lines in the figures are included for the purpose of illustrating unclaimed portions of the flood sensor and form no part of the claimed design.