Designed by a bloke called Delroy Dennisur, the Power Conscience is a cute little gizmo that you plug in to keep an eye on how much electricity you are getting through. It's a slim white box decorated with LEDs in a floral design that light up depending on your consumption. More flowers means more power used. See a pic of the Power Conscience in full bloom after the jump.
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Unless KC2IDF the house is completely off the grid, then the variable voltage would make sense. Especially if the homes electrical system is controlling the homes generator and capacitors.