... to 30% compared with 1Model: NB-HPS/MH1000W 2Suitable for 1000W HPS and MH bulb of America and Europe standard 3Without ... , 100%, 75%, 50%15 Prolong lamp lifespan at least 10%16 Energy-saving up to 30% compared with magnetic ballast17Protection function ... , CUL, ROHS are available. Electronic Ballast for metal halide lamp 1000W