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EU PLUG 400w digital HPS MH Grow Light ballast Digital Electronic Ballast: Run at 100%, 75% or 50% power Fit for metal halide lamp Pass FCC, UL and CE Certificate Universal reflector adaptor Internal RF protection Internal resin coating protects components for long time Uniqute graduated fin design for more efficient cooling Extruded aluminum housing is engineered to dissipate heat and keep the components cool Specified Frequency: 50/60Hz Working Voltage Range: 90~260V Extremely efficient-99% power factor Soft Start Technology to extend the life of the lamp cut off circuirty-Automatic cut off when a short is detected ,for ultimate safety Higher lumen output than magnetic ballast If you have any problem for shipping delay or defective product ,please contact us before dispute,your understanding will be high appreciate!