This name is a bit difficult to understand. Let's briefly talk about the function. It is aimed at the elderly living alone with their children not at home, but there is a need for long-term voice chat. One-key video or voice chat with relatives and friends, one-key VIP community service (one-key solution for the elderly's food, clothing, housing and transportation), one-key rescue (just like ringing a bell in a hospital bed, one-key direct professional doctors for online consultation under special circumstances, and the nearest medical staff can be sent to provide on-site service according to the severity). Large stereo speakers ensure that incoming calls or danger warning broadcasts from the community (e. g. earthquake, flood, storm, etc.) can be heard in every corner of the room.