大廈式對講主要功能在大廈入口安裝方便訪客進入時對講機透過電話通知戶主通話及啓動大門電鎖讓訪客進入，戶主進入大廈時可選用密碼、拍卡、八達通進入啓動電鎖進入大堂,更可加裝攝像機鏡頭透過大廈本身公共天線連接可令每戶都能在家中電視監察更可用固網電話或手提電話與訪客溝通及開啓入口大門電鎖。攝像機更可提升至高清720p或1080p。特點是舊式大廈不需重新佈線升級至主流大廈式對講系統。與時並進。

The main function of building- type intercom at the entrance is to facilitate visitors to enter into the building and through a walkie- talkie, visitors can alert the owners of their arrival and subsequently gain access into the building. Owners can gain access into a building through the following ways: inputting a password; swiping their resident cards; swiping their Octopus cards. Addition cameras can be installed in the building and through public antenna connection, every resident can access and monitor the cameras on their television at home. In additional, owners can use a landline telephone to communicate with visitors and grant access to visitors at the entrance of the building. Cameras can be upgraded to HD 720p and 1080p. The key feature is that rewiring would not be needed in traditional building and keeping to date with those mainstream building intercom system.