Diagram for a door to block the way up-down at the escalator area. Characteristics of the way up from the 1st floor to the 3rd floor
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Characteristics of the way down from the 3rd floor to the 1st floor before going down the escalator There will be a swinging door closed, you have to press the open button to open the swinging door.

 
The top view features are clearly separated on the up-and-down way, making it more comprehensive to see the installation distance.
