Ключевые слова: alarm, background, box, call, care, city, closeup, communication, concept, contact, control, danger, electric, electricity, emergency, energy, equipment, help, icon, interior, modern, object, outdoor, panel, phone, power, public, railway, rescue, room, safety, security, service, sign, sos, station, subway, support, switch, symbol, system, technology, telephone, train, transportation, travel, urgency, wall, white, yellow,