Since the fan cannot be guaranteed to operate at the rated voltage (220V), the air volume and noise may not be the same as the test data in the test room.
Since it cannot be ensured that the fan operates at the rated voltage (220V), the air volume and noise may be different from the test data in the test room.
Because the fan cannot be guaranteed to operate at rated voltage (220V), the air volume and noise may be different from the test data in the test room.