2 position selector pushbutton switch 1.manufacture factory 2.Fix diameter:22mm 3. ... ≤90%Pollution degree: class 3Protection degree: IP40. IP65 Waterproof type as requestContact resistance:≤50mΩMechanica durability:momentary 1000,000 maintained ... ... dobble button,with key,with light,self-lock,self reset,convex,waterproof... 2 position stay put selector pushbutton switch, Schneider type pushbutton