The mark consists of a solid orange circle with the word "POWER" in black at the top above a vertical yellow rectangle outlined in black with 8 gray squares outlined in black below. To the left of the rectangle are the stacked symbols "L1", "L2", "L3" and "GD" in black, and to the left of these stacked symbols are the stacked items "ACV", a sim symbol, "DCV", and a horizontal line above a broken parallel line in black. To the right of the rectangle are four stacked gray circles with the top one outlined in white and the lower three outlined in black above a black u-shaped magnet partially surrounding the word "TEST" in black with two white squares to the right of the magnet, and three curved lines to the right of the white squares. Vertical black lines join the three lower gray circles and the magnet. A "+" and "-" symbol are situated under the rectangle, and a black line extends from the bottom of the rectangle to the magnet. On the right side of the orange circle is a yellow circle with 8 black lines radiating therefrom above the letters "CHG", a yellow and black electrical safety symbol, a white circle having a black arrow and lines and the black letters "LO CHG".