... .With good dust-proof,corrosion-proof properties.4.Bult-in ballast and trigger are inside lamp body which is easy for ... High-pressure sodium vapor lamp:70W,100W,110W,150W,250W Metal halide lamp:70W,100W,175W,250W8.Cable specification: φ10mm-φ14mm9.Inlet ... note Ex-mark.For example:If metal halide lamp 250W is needed,of celling mounting type,with ballast,so the full model is ...