No. Euro 2-pole works. And Schuko. By the way, the problem exists the other way round too - if you want to plug it into a CH wall socket, you need an adapter. I use a Max Hauri T12 CH-D (Schuko, CH) and a Max Hauri travel adapter Switzerland T23 plug / Schuko (CH, 3-pole, Schuko, 2-pole) - both here at Galaxus.