Ключевые слова: accident, alarm, alert, alertness, background, bell, box, break, building, button, concrete, control, danger, detector, emergency, equipment, fire, firefighter, flame, glass, help, industrial, metal, office, panel, press, protection, pull, push, red, rescue, safe, safety, secure, security, sign, sound, sprinkler, switch, symbol, system, wall, warning, white,