As a rule, in all our homes – three-wire system on the chandeliers, combined with the series switches, providing three options of illumination. For patipanno chandeliers – two, three and five of the included shades. However, if you buy three buttons switch and connect a powerful diode as shown in the figure, the options you enable will turn out much more: two in polygala; two; three; two in polygala plus three, and five shades.