1. The lock hook of this floor hall is invalid, but it won't hook.

The door lock of this floor hall is very short and it is stuck.

3. After closing the door, the hall door hammer will be invalid.

Elevator is a kind of vertical elevator powered by motor, also known as elevator/elevator, commonly known as "?" In Malaysia, Singapore and Hong Kong. (transliteration of lift). Vertical elevators are equipped with box-shaped pods, which are used to carry people or goods in multi-storey buildings. There are also stepped elevators, the pedals are installed on the track and run continuously, commonly known as escalators, also known as escalators, pedestrian elevators, escalators and so on. Elevator is a fixed lifting equipment serving the designated floor, which runs between at least two rows of rigid guide rails with vertical or inclined angle less than15. Elevator with car, the size and structure of the car are convenient for passengers to get in and out or load and unload goods.