For System M. The rocker is plugged onto the 1-way push button module. Wiser push button module, 1-way System M MEG5113-0300. Merten System M rocker MEG5215-0403 is for Wiser push button inserts with up and down marking arrows in matt black. The rocker is snapped on. The cover is made from recycled material made from industrial waste. The color is black based on RAL9005 with a matt finish due to the paint. The product has been developed for IP20 use with flush or surface mounting. The material used reduces waste and is part of Schneider Electric's environmental initiative. Material thermoplastic. Color matt black.