Fan of highest quality with much quiet engine designed to bathrooms. With ball bearings, which ensures long life. Himself about it have one high performance is its power consumption much low. Fan connected lyskontakten, past, the laws starts thus fool switch switched. Fool light switched off running fan what number minutes it is set to. Seedli factory is it set to 15 mine. This time can changed seedli 2-30 mine. On back of fan sitting is there one clear foil closing damper,...