> Product Introduction AR/EB 600W can be used with 120V~240V input source. It can light 600W High Pressure Sodium. It has high power factor, low total harmonic distortion, low temperature rising, no flickering, constant output power, energy-saving up to 30%. > Performance&Characteristic 1. Total energy saving achieved 20%~50% (when compare with MB) 2. Low total harmonic and constant output power 3. Soft startup and advance lighting quality 4. Absent acoustic resonance and smooth lamp operation 5. Open circuit / short circuit auto-protection function