Can the side door of two stairs and three households be closed?

Two stairs and three doors can be closed. Official website, a property manager, said that property service enterprises should establish an access control system to ensure the personal and property safety of owners and tenants. Therefore, it is not illegal to set up an access control system at the entrance of a residential building. However, when setting up access control, it is necessary to abide by relevant regulations, such as not affecting the normal access and passage of other owners and households, and requiring the approval of the industry Committee and relevant departments.