How to install ladder control in property

Get the consent of two-thirds of the owners. The installation of ladder control needs the property reserve of the owner, so whether to install ladder control needs the owner's consent and must be authorized by more than 2/3 owners. Elevator control is a kind of elevator control technology. A system device similar to "access control" is installed on the original elevator, and the elevator will start after swiping the card and send the owner to the floor he wants to reach.