The ornamental design for a case for datarelaydevice, as shown and described.
FIG. 1 is a perspective view of a case for data relay device, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is another side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines that are immediately adjacent to the claim, and define unshaded regions, represent the bounds of the claim, while all other broken lines including the two broken line squares in the FIGS. 1 and 2 views are directed to environment; the broken lines form no part of the claimed design. In addition, the unshaded surface in the FIGS. 1 and 6 views that directly adjoins the claimed solid line edge and the unshaded inner surface that adjoins the claimed solid line edge in the FIG. 7 view forms no part of the claimed design.