Sigma 50 Dual flush activation board 115.788.00.2 GEBERIT Board for built-in Geberit cisterns, with double flushing capability Bare board for tile application with colored glossy buttons Construction material: ZING Actuation force < 20 N Product Code: 115.788.00.2 Sigma 50The Geberit Sigma50 combines elegant design with premium materials and exceptional build quality. Updated in 2014 by renowned industrial designer Christoph Behling, the Sigma50 features a sleek glass surface without a metal frame, creating a clean, lightweight look that seems to float in front of the wall. In 2019, Geberit and Behling refined the design even further, enhancing both aesthetics and usability. Every detail reflects quality: the safety glass edges are precisely chamfered, and the two flush buttons—made of polished die-cast zinc—have a slightly curved contour for a sophisticated finish.