港台三级A∨在线,久热青青青在线视频精品,日本欧美一区二区三区在线播放,中文字幕精品亚洲一区

The frequency of the alternating current determines the speed of the breeze ceiling fan.If you want to adjust the speed, you need to add a frequency regulator,but the FM is expensive, not situable for the breeze ceiling fan.So in the market,no breeze ceiling fans with different speed level setting.Due to no frequency in DC,Zolee breeze ceiling fan is AC,not DC design.