FIG. 1 is a front isometric view for a novel design of an absence of voltage display device; FIG. 2 is a rear isometric view thereof; FIG. 3 is a front view thereof; FIG. 4 is a top view thereof; FIG. 5 is a first side view thereof; FIG. 6 is a second side view thereof; FIG. 7 is a bottom view thereof; and, FIG. 8 is a rear view thereof.