... DIPA20TA,T6 Explosion proof fluorescent fitting Type BYSApplication1.Used in Zone 1,Zone2, Zone20.Zone21,Zone22.2.Used for Groups IIA, ... , corrosion resistance, thermal resistance and cold resistance.2 Lamp shade is injected of polycarbonate with good benefits in lighting ... inside with lone service life and high light efficiency.8 Built-in exclusive explosion proof electronic ballast.9 Built-in limit ...