The dimmable LED suspension Atto by Secto Design was designed by Seppo Koho and was awarded the iF Product Design Award in 2010. The large, rounded shade is made of pressed birch plywood slats which filter the light sideways and let it escape mostly downwards. The LED light source is located in a cylinder of steel covered with structure lacquering and acrylic glass. A textile cable and a ceiling rose complement the design.
Atto can be dimmed with a trailing edge or leading edge phase dimmer.