For System M. The rockers are plugged onto the 2-way button module. To be completed with Wiser button module, 2-way System M MEG5123-03xx extension Plus, 2-way System M MEG5129-0300. 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 through painting. The product has been developed for IP20 use with flush or surface mounting. Material: thermoplastic. Color: matt black.