This fan is suitable for both ventilation and fire control applications in high-rise buildings, subway tunnels, underground stores, gymnasiums, and similar venues. It is equipped with a dual-speed motor. Under normal conditions, the fan operates at low speed for routine ventilation. In the event of a fire, the electric control system automatically switches the fan to high speed to expel smoke, helping to ensure the safe evacuation of personnel from the fire scene.

The medium being moved consists of air or other non-self-igniting, non-explosive gases that are not harmful to humans. The transported air must be free of adhesive materials, and any dust or particulate content should not exceed 150 mg/m³, with operating temperatures remaining at or below 80°C. When used for fire control, the fan can run continuously for more than 30 minutes under conditions where the air and smoke temperature reaches 280°C.