正確定義是家用電梯。即安裝在私人住宅中，僅供單一家庭成員使用的電梯。它也可以安裝在非單一家庭使用的建筑物內，作為單一家庭進入其住所的工具，但是建筑物內的公眾或其他居住者無法進入和使用。

Its precise definition is a home elevator: i.e., an elevator installed in a private residence and intended for the exclusive use of a single household. It may also be installed in buildings that are not for single-family use, serving as a means of access to the residence of that specific household. However, it shall not be accessible or usable by the general public or other occupants of the building.