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 to consolidate a powerful diode as shown in the figure, the options you enable will turn out much more: two dimly; two; three; two plus three dimly, and finally, five shades.
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