... -BZ10_ , _ enter figure: 1-one NO, 2-one NC, 3- two NO, 4-two NC, 5- NO+NC3. Only land contact-replacement: Example ... :SB2-BE10_, _ enter figure:1-NO, 2-NC2. ApplicationUsed to either close or open an electrical circuit ... up, ... dobble button,with key,with light,self-lock,self reset,convex,waterproof... 2 position stay put selector pushbutton switch, Schneider type ...