Ключевые слова: app, art, automation, button, communication, computer, concept, contour, control, device, digital, door, electronic, energy, equipment, handle, home, house, icon, illustration, internet, isolated, key, light, line, linear, lineart, lock, mobile, modern, monitoring, network, open, outline, pattern, protect, remote, safety, seamless, secure, security, smart, smartphone, symbol, system, technology, unlock, wifi, wireless,