Ключевые слова: alarm, automation, beacon, bright, button, closeup, control, controller, danger, detector, device, electric, electrical, electronic, emergency, engineering, equipment, factory, flasher, flashing, green, indicator, industrial, industry, interior, lamp, led, light, machine, machinery, manufacturing, metal, modern, panel, plant, power, railroad, red, revolving, safety, screen, signal, siren, start, system, technology, warning, water, work, zone,