Ключевые слова: background, black, button, circle, concept, control, controller, design, editable, electric, electrical, electricity, electronic, element, equipment, flat, graphic, handle, industry, instruction, interface, internet, isolated, light, object, off, on off button, power, power button, press, push, round, set, shutdown, sign, start, stop, switch, symbol, technical, technology, toggle, touch, turn, turn on, web, white,