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See Chinese contents: GB/T 40081-2021 GB/T 40081-2021: Automatic rescue operation device for lifts
This Standard specifies the technical requirements, automatic rescue power supply, test methods, inspection rules, as well as marking, packaging, transportation and storage of automatic rescue operation device for lifts. This Standard is applicable to traction-driven passenger elevators and freight elevators with power-driven automatic doors. Other elevators may take this document as a reference.
