The invention relates to a system of dispensing a product rolled around an element such as a tube (50), such product defining a structure such as a cylinder, and such system comprising in particular: a frame, a means of support and connection of the roll in the frame. It is claimed for the invention that the tube (50) includes an electrically conductive element (50c) designed to operate in conjunction with an element of the frame so as together to form an electric circuit element.