Ключевые слова: alarm, alertness, appliance, building, burning, ceiling, danger, detector, disaster, domestic, electrical, equipment, fire, home, horizontal, house, household, insurance, life, object, objects, objectsequipment, office, plastic, prevention, protection, rescue, risk, safety, security, sensor, shape, single, siren, smoke, sound, structure, symbol, system, technology, threedimensional, warning, white,