2 position selector pushbutton switch 1.manufacture factory 2.Fix diameter:22mm 3.Max 380V ... humidity: ≤90%Pollution degree: class 3Protection degree: IP40. IP65 Waterproof type as requestContact resistance:≤50mΩMechanica durability:momentary 1000,000 maintained ... ,self reset,convex,waterproof... 2 position stay put selector pushbutton switch, Schneider type pushbutton