The ornamental design for an electroluminescentwallplate, as shown and described.
FIG. 1 is a front elevational view of an electroluminescent wall plate
showing my design, with the stippling showing contrasting surface
appearance, particularly, a luminescent surface appearance when energized
electrically;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a left elevational view thereof; and,
FIG. 5 is a top plan view thereof with the bottom plan view being a mirror
image thereof.