描述Description

 訂貨代號：FA021A-5103

Order No.:FA021A-5103

 直流電子調(diào)速(E); 高速機械導通

Electric speed control(E); High speed mechanical breakover

 直流雙速(2S);直流單速(S)

DC Double speed(2S); Single speed(S)

 防塵功能，可外接LED燈

Anti-dust,LED can be choosed