Ключевые слова: activate, alert, background, bright, button, click, component, connect, control, danger, design, device, electric, electrical, electricity, electronic, emergency, engineer, equipment, factory, gray, green, indicator, industrial, industry, interface, light, machine, negative, network, opposite, plastic, positive, power, press, push, red, red and green button, safety, sign, signal, status, stop, switch, symbol, system, technology, voltage, warning, yellow,