2 position selector pushbutton switch 1.manufacture factory 2.Fix diameter:22mm ... cantact pedestal,Example:SB2-BZ10_ , _ enter figure: 1-one NO, 2-one NC, 3- two NO, 4-two NC, 5- NO ... key,with light,self-lock,self reset,convex,waterproof... 2 position stay put selector pushbutton switch, Schneider type pushbutton