... quality as QUANTUM - dimmingable - 100-240V compatible - HPS & MH convertible - UL, CUL, CE, ROSH certification - same quality as QUANTUM- convertable for ... , over heat protection,- Completely silent: no more humming and buzzing- Approval: UL,CUL, EMC, ROSH- Input voltage: 108VAC- 268 VAC- Input rated ...