Ключевые слова: adjustment, background, black, board, button, buttons, cable, closeup, computer, console, control, current, device, digital, display, electric, electrical, electricity, electronic, electronics, energy, entertainment, equipment, industrial, industry, instrument, knob, level, light, machine, metal, modern, panel, power, professional, push, safety, setting, soft, switch, switching, system, technology, white, wire,