Ключевые слова: air, alarm, art, automation, building, business, camera, climate, cold, concept, contour, control, design, device, digital, door, electronic, equipment, handle, heat, home, house, icon, illustration, infographic, internet, isolated, line, linear, lineart, lock, mobile, outline, phone, protection, room, safety, security, sign, smart, smartphone, symbol, system, technology, temperature, thermometer, warm, watch, wireless,