FIG. 1 is a top, front perspective view of the modular data communication device of our new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a rear view thereof; and,
FIG. 5 is a left side view thereof, the right, side view being a mirror image thereof, with the exception of the circumferential extent of the outer, rim-like element on the front of the design at its midline, that element extending further along the left side than on the right side, as shown in FIGS. 1—3.