1. Outside the elevator, we can see two arrows, one is upward (for going upstairs), the other is downward (for going downstairs), and the other is the display screen (showing the current running state, such as the upward arrow and the number 5, indicating that the elevator is going up to the fifth floor).
2, according to your own needs, press the up arrow or down arrow, this is the elevator arrow lights up, indicating that the elevator has received instructions and will arrive at your floor later, which is what you need to wait for the elevator to arrive.
When the elevator reaches your floor, the elevator door will open automatically. Walk into the elevator. After entering, there are several rows of digital buttons near the elevator door. Find it.
The number buttons represent the floor you want to go to. Some buildings have underground floors, which are generally indicated by B+. For example, B 1 stands for the basement. Click on the floor you want to go to, and the button lights up, indicating that the elevator receives the instruction, and then wait for the elevator to reach the floor you want to go to.
5. Above the elevator department, there is a display screen of elevator running state. Just like the display screen outside the elevator, pay attention to the floor where the elevator arrives. Don't do this.