Ключевые слова: alarm, beacon, bricks, caution, closeup, danger, detector, device, electric, electrical, electricity, electronic, emergency, energy, equipment, factory, flashing, flow, glass, glowing, grunge, industrial, industry, lamp, lantern, led, light, line, manufacturing, metal, norrland, orange, panel, power, red, roof, safety, screen, security, sign, signal, siren, sweden, symbol, system, technology, umea, vintage, warning, yellow,