1. adjustable two speed cooling motor 2. 245w, 4/6pole, two speed 3. CCC, CE, UL certificates 4. much export experience ... 5, this method is suitable for high precision requirements, speed control performance is better occasion.Advantage simple structure, stable ... , speed rate is not more than 2.5 %,d our factory with precise control, speed rate less than 1 %Specification adjustable speed motor ...