Ключевые слова: alarm, alert, alertness, background, building, bus, ceiling, construction, control, danger, design, detector, device, domestic, electronic, emergency, equipment, fire, heat, home, house, household, indicator, indoor, industry, interior, light, modern, object, office, prevention, protect, protection, rescue, safety, security, sensor, sign, signal, siren, smoke, sound, subway, system, technology, train, transport, wall, warning, white,