Straight lines, sinuous and curved shapes combine in Button, a complete model that also serves as a functional shelf. Design - Francesc Rife. Francesc Rifé's latest collection for Estiluz. The hallmark of this luminary is that it can be adapted to meet users' needs and is suitable for lighting large areas as well as small rooms, according to the tasks it will be lighting. The tactile sensor switches each point of light on and off individually. These can also be distributed as required along the electrified rail. Besides the individual version, it is available in three standard sizes and can be manufactured to measure.