... up 2.voltage:24-380V 3.contact type:NO,color:transparent 4.CE,CCC approve XB4 Series ... replacement: Example:SB2-BE10_, _ enter figure:1-NO, 2-NC2. ApplicationUsed to either close or open ... 5.Other modles for reference:flush head,mashroom head,spring return,turn release,turn to stay up, ... ... dobble button,with key,with light,self-lock,self reset,convex,waterproof... ip66 waterproof pushbutton switch ...