Electric power monitoring device

FIG. 1 is a front, top, and right side perspective view of an electric power monitoring device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The dashed broken lines in the figures show portions of the electric power monitoring device that form no part of the claimed design. The dot-dashed broken lines in the figures depict the bounds of the claim and form no part thereof.