... reliable, high illuminant quality,energy-saving ballast for Street light UL and CUL approval cwa ballast for hight pressure sodium and metal ... halide lamp available in:HPS 70W,150W,200W,250W,400W,430W,600W,1000W;MH 70W ... ,150W,175W,250W,320W,350W,400W750W,1000W,1500W;Input voltage and frequency available ...