energy saving electronic ballast 1.Energy saving low loss circut 2.Compact, small and light 3.PF>0.99 4.3 years warranty Product Name: A energy saving electronic ballast 150W hpsAdvantages: 1.Smart and lighter design , easy to install.2. No fan, good waterproof performance, maintenance-free 3.Soft start, constant wattage output Ballast noise rated class A 4.CE, FCC, UL, CUL, ROHS are approved5. ...