... will use the 150W to modify for you.20W,35W,70W,150W,250W for Metal Halide lamps with CE, ROHS,ISO9001 in China ... >0.95Rated FrequencyFn=50/60HzEfficiency>85%(20W), >87%(35W)Output current crest factor<1.4overload protectionyesshort-circuit protectionyesover warm protectionyes ... . 4,Abnormal lamp automatically cut off the power 5, with overvoltage protection, to prevent a short time voltage surges and ...