Switch assembly for changing the direction of current from a power source to an appliance comprising - at least four wirings, two of the wirings (W/PS) are connectable with the power source and the remaining wirings (W/A) are connectable with the appliance, - all wirings are fixed on the surface of a substrate and none of the wirings are directly connected to each other, - a first button comprising a first conductive pattern on one surface (SF2') of said button, - a second button comprising a second conductive pattern on one surface (SF2") of said button, - the surfaces (SF2') and (SF2") of the buttons and on which the conductive patterns and are arranged face the surface of said substrate where the wirings are arranged, - the buttons and are fixed directly or by means of an interlayer on the substrate - said conductive patterns and on the buttons and and said wirings on the surface of the substrate are arranged in such a manner and said buttons and are placed on said substrate in such manner, that (i) said conductive patterns and on the buttons and are not in contact with said wirings in an unpressed state of the buttons and, and wherein further the conductive patterns and comprise, preferably consist of, (a) a composition comprising a polymer and a conductive material dispersed in said polymer and/or (b) a conjugated polymer, and characterised in that (ii) the button connects by means of the conductive pattern in a pressed state simultaneously the first wiring of the two wirings (W/PS) with one wiring of the remaining wirings (W/A) and the second wiring of the two wirings (W/PS) with another wiring of the remaining wirings (W/A) to enable a first current path through the switch assembly, and (iii) the button connects by means of the conductive pattern in a pressed state the first wiring of the two wirings (W/PS) with one wiring of the remaining wirings (W/A) and the second wiring of the two wirings (W/PS) with another wiring of the remaining wirings (W/A) to enable a second current path through the switch assembly being different to the first current path. - at least four wirings, two of the wirings (W/PS) are connectable with the power source and the remaining wirings (W/A) are connectable with the appliance, - all wirings are fixed on the surface of a substrate and none of the wirings are directly connected to each other, - a first button comprising a first conductive pattern on one surface (SF2') of said button, - a second button comprising a second conductive pattern on one surface (SF2") of said button, - the surfaces (SF2') and (SF2") of the buttons and on which the conductive patterns and are arranged face the surface of said substrate where the wirings are arranged, - the buttons and are fixed directly or by means of an interlayer on the substrate - said conductive patterns and on the buttons and and said wirings on the surface of the substrate are arranged in such a manner and said buttons and are placed on said substrate in such manner, that (i) said conductive patterns and on the buttons and are not in contact with said wirings in an unpressed state of the buttons and, and wherein further the conductive patterns and comprise, preferably consist of, (a) a composition comprising a polymer and a conductive material dispersed in said polymer and/or (b) a conjugated polymer, and characterised in that (ii) the button connects by means of the conductive pattern in a pressed state simultaneously the first wiring of the two wirings (W/PS) with one wiring of the remaining wirings (W/A) and the second wiring of the two wirings (W/PS) with another wiring of the remaining wirings (W/A) to enable a first current path through the switch assembly, and (iii) the button connects by means of the conductive pattern in a pressed state the first wiring of the two wirings (W/PS) with one wiring of the remaining wirings (W/A) and the second wiring of the two wirings (W/PS) with another wiring of the remaining wirings (W/A) to enable a second current path through the switch assembly being different to the first current path. (i) said conductive patterns and on the buttons and are not in contact with said wirings in an unpressed state of the buttons and, and wherein further the conductive patterns and comprise, preferably consist of, (a) a composition comprising a polymer and a conductive material dispersed in said polymer and/or (b) a conjugated polymer, and characterised in that (a) a composition comprising a polymer and a conductive material dispersed in said polymer and/or (b) a conjugated polymer, (ii) the button connects by means of the conductive pattern in a pressed state simultaneously the first wiring of the two wirings (W/PS) with one wiring of the remaining wirings (W/A) and the second wiring of the two wirings (W/PS) with another wiring of the remaining wirings (W/A) to enable a first current path through the switch assembly, and (iii) the button connects by means of the conductive pattern in a pressed state the first wiring of the two wirings (W/PS) with one wiring of the remaining wirings (W/A) and the second wiring of the two wirings (W/PS) with another wiring of the remaining wirings (W/A) to enable a second current path through the switch assembly being different to the first current path.