HPS/MH:35W,70W,100W,150W,200W,250W,320W,400W, ... CE approved HID MH Digital Electronic Ballast for 70W Metal Halide Lamp Model number: HT-70/35W (Compatible with HPS70W lamp) Specification ... 95 %( Max) THD: <10% Output power: 70W/35W Current crest factor: <1.5 Output frequency: 100 Hz Protection of short circuit ... 90º C Safety and regulation: IEC61347 EMC: EN55015 Digital Electronic Ballast (HT-70/35W)