What is the principle, installation method and maintenance technology of magnetic card doors in hotel rooms?

A receiver, a motor and a data interface. All doors have data lines, all connected to the computer room and host computer. When the host computer is connected to the computer software, it can run normally. There are many types of wiring. Some hosts can have one or more hosts, which can be installed directly near the door. They can be bridged with network cables and controlled by a computer. These hardware are the host computer, the door lock wiring is similar, and there are many kinds of software. As long as it is not a software problem, you can refer to the access control maintenance.