1 and Zone 2 dangerous places. 
 Ⅱ A, Ⅱ B IIC explosive gas environment. 
 Applicable to combustible dust. 
 Cast aluminum alloy shell with plastic sprayed surface. 
 ■ overall for the composite structure, the shell structure with increased safety, with strong water and dust 
 ■ built-in button, indicator light, ammeter are explosion-proof components. 
 ■ pipe or cable wiring. 
 ■ comply with BG3836-2000, IEC60079S standards.