A型机座的45mm直径标准型管状电机， 机械限位，机座形状是圆形方便调试，适合用于遮阳帘、投影屏幕、遮阳篷和金属卷帘门等

45mm standard tubular motor，“A” means round the motor’s base code, for easy debugging, mechanic limit head,applied for roller blinds ,projector,venetian blind ,awning and metal roller door.