Tecom e-Home Pro is a software for the Android and a native application that allows you to seamlessly control all aspects of your property, including monitor out door environment, conversation with visitor using smart phone, climate information, multi-room audio/video, security, digital surveillance anywhere in the world. :Requires an activated xDSL account and Wi-Fi router to connect your IP intercom hardware. A video door phone & Gateway adapter are required to work with Tecom e-Home Pro APP. Purchasing of hardware is required. See suppliers website for more installation and pairing tips. :- Easy installation and maintenance free.- Accessible in anywhere via the internet and 4G/5G connectivity. - Applicable with mobile devices (Smart phone & tablet).