2. After the elevator door is opened, enter the car, press 1, then press 5, and then press 3.
3. Finally, press OK. Established in 1992, Shenlong Elevator Co., Ltd. is a modern professional elevator manufacturer integrating design, manufacture, sales, installation and service. Its products cover all kinds of elevators, escalators, moving sidewalks and elevator parts. It is the governing unit of China Elevator Association and one of the top five elevator enterprises in China.