... -protections 4.No MOQ,work quiet Product Name 400W Hydroponic electronic ballast for grow light kits Our Advantages:1, Low Energy-consumption, Timing Dimmer ballast2, ... 15%-45%5, Open circuit protection, short circuit protection and overload protection6, Light weight, small size, easy establish, work quiet, 3 ... (mm)(L*W*H)WeightXLDS-HPS-70W70W0.31A≥0.99≤8%146×93×55920gXLDS-HPS-110W110W0.5A≥0.99≤8% ...