Highlights SIP indoor unit (Linux version) 7&quot, capacitive touch screen with power saving mode receiving an HD image from the door communicator Two-way communication based on the SIP v2.0 protocol powered by PoE or external source supports mounting in US or European electrical wall outlets Bluetooth and wireless function Incl. on-wall bracketPremium touch screen for your home. On-Wall BracketPremium touchscreen for your homeThe Akuvox C313W multifunctional communicator with a Linux operating system provides audio and video communication with door phones via the SIP 2.0 protocol.It offers the ultimate touchscreen experience in an unobtrusive, space-saving design with a brilliant 7-inch touchscreen display.Akuvox Smart PlusAkuvox SmartPlus allows tenants to see and talk to visitors, open doors, monitor building entrances and virtually control their home.The system also makes it easier for property managers and owners to manage building access. State-of-the-art smart phones, an easy-to-use mobile intercom APP-SmartPlus and a powerful cloud-based Management Portal have been developed to provide an unrivalled building experience.you want to learn more about Akuvox Smart Plus. Then click&nbsp,here.