Schneider Projecting button, metal, Black, spring return 1NOIlluminated metallic complete unit with contact function. It combines simplicity of installation, flexibility, and robustness. It meets the requirements of the majority of industrial applications. The Push button has a black projecting, unmarked, a spring return operator, Chromium plated metal bezel material, round shape of signalling unit head, 1 NO contact type and composition, slow break contact operation and silver alloy (Ag Ni) contacts material