SIS is a three-dimensional lighting system based on a compact 24 V electrified track (18 mm in diameter). It allows individual, high luminous flux spotlights to be installed and freely positioned along the track's entire length. The system is available in a suspension version. SIS has different light sources: downlights with lenses in varying angles of aperture (24º 36º and 60º), pivotable projectors (24º, 36º and 60º) and a decorative opal glass spotlight. The system also has a striated glass accessory that adapts to the downlights. The light sources in the SIS System collection are available in brass, black, grey and white finishes, while the track always comes in black.