Ключевые слова: analog, button, circuit, component, conservation, control, design, dirty, down, electric, electrical, electricity, element, energy, finger, hand, home, industrial, interior, isolated, light, light switch, lighting, modern, off, off on, old, on off, plastic, power, press, push, pushing, residential, room, safety, shutdown, signal, square, start, switch, technical, thumb, toggle, touch, trigger, turn, up, wall, white,