调光开关 meaning in English

dimmer switch

Dimmer switches allow you to lower lighting levels , which can save up to 40 % of normal lighting costs
调光开关可以让你降低照明强度，从而节省正常强度情况下照明成本的40 % 。
During dinner , while watching tv , or for social gatherings , you can conserve and enjoy the warmer ambience . these specialty switches are not expensive and are easy to install
这种特殊的开关其实并不昂贵，而且易于安装。用餐、看电视、朋友小聚时，你可以利用调光开关让环境处于温暖、舒适的气氛中。