Ключевые слова: 911, activation, alarm, alert, bell, blue, building, caution, center, communication, cover, danger, electronics, emergency, escape, evacuate, fire, firefighter, glass, help, industrial, industry, loud, mall, market, mount, mounted, multiple, nobody, panic, point, protection, pull, red, ring, safe, safety, security, services, set, shopping, shopwindow, show, sound, supermarket, superstore, system, wall, warn, window,