Ключевые слова: background, beautiful, bright, building, button, clean, closeup, concept, conservation, contrast, control, electric, electricity, empty, energy, equipment, home, house, idea, illuminated, indoor, interior, lamp, light, modern, objects, off, office, on, outlet, panel, plastic, plate, power, press, push, room, save, savings, simple, space, square, start, stop, supply, switch, toggle, turn, wall, white,