... dust-proof,corrosion-proof properties.4.Bult-in ballast and trigger are inside lamp body which is ... : IP654.Corrosion-proof grade:WF25.Rated voltage: 220V/50Hz(Please note when special request)6.Lamp ... sodium vapor lamp:70W,100W,110W,150W,250W Metal halide lamp:70W,100W,175W,250W8.Cable specification: φ ... .For example:If metal halide lamp 250W is needed,of celling mounting type,with ballast,so the full ...