Smartphone IP intercoms
IP - Wireless video intercoms
IP intercoms are video systems using digital video, with the ability to display on a fixed house monitor or a smartphone. Smartphones at home will connect by wifi to the house network. When you are out, the smartphone connects to the world network using your internet data,facility.
A smartphone needs to have the relevant app installed to accept calls. There is no call charges except the roaming data use. The householder can open the door or gate by pressing a button on the app. Various finishes are available.