Supply explosion-proof electrical explosion-proof lamps, Shanghai amount giant explosion-proof control button, supply explosion-proof electrical explosion-proof lamps, Shanghai amount giant explosion-proof control button, supply explosion-proof electrical explosion-proof lamps, Shanghai amount giant explosion-proof control button, LA53-series explosion-proof control button (Ⅱ B ) 1.1 Scope District, Zone 2 hazardous gas areas; 2. Ⅱ A, Ⅱ B class T1 ~ T6 group explosive gas or vapor environment; 3. indoor, outdoor (IP55) Features aluminum shell die-casting molding, spray the surface ; 2 built flameproof button and increased safety ammeter; 3 the ammeter button surveillance equipment running state; 4. pipe or cable wiring.