A:the product says all The controller adoption film slice the type feeling press a component, its flameproof marking is the Ⅱ CT5 of Ex ed.Can used for pressing the air liquid or steam etc.s that the component didn't decay a function to lie the automatic control that Ⅱ A,Ⅱ B,the Ⅱ C T a the ~ T5 set of explosion air mixture place of the quality carries out pressure to the feeling, the initial value of the controller regulates the scope as 1.6 KPa ~ 2.5 MPas.The antisepsis type can used for causticity to lie quality. Two:main technique function 1.Accuracy grade: 1.6 classes 2.Outer shell protection grade:IP54(GB4208 - 93)