Ключевые слова: arrow, background, brick, building, concrete, construction, corridor, dark, directional, door, doorway, douse, electrical, emergency, escape, exit, extinguisher, fire, firesuppression, glass, glowing, green, head, hotel, illuminated, interior, life, lifesaver, light, mounted, neon, night, object, protection, safe, safety, security, sign, signs, spray, sprinkle, sprinkler, sprinklerhead, suppress, symbol, technology, wall, water, white,