Ключевые слова: alarm, automated, automation, beacon, business, caution, cell, column, communication, control, detection, detector, device, electric, electrical, electricity, emergency, engineering, environment, equipment, factory, heavy industry, indicator, indicator lights, industrial, industry, instrument, lamp, light, light towers, machine, manufacture, manufacturing, modern, plant, power, red, safety, security, signal, signal lights, sky, station, stop, technology, tower, tower lights, warning, warning lights, workshop,