Black is a common colour in the bathroom. Even ceramics may be black nowadays. To adopt the entire toilet to this, WISA has given a familiar control panel a new look. The panel is equipped with dual flush keys, which can be used for a small flush of 3 litres or a large flush of 6 litres. Delos panels are used in combination with the well-known WISA XS concealed cisterns, which are characterized by ease of installation, the narrow frame of 38 cm and the proven quality!