Detector Device

FIG. 1 is a front-top-left perspective view of a detector device showing the claimed design;

FIG. 2 is a front-bottom-right perspective view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a back view thereof.

The portions of the article shown in broken line form no part of the claimed design.