1.150W HPS digital electronic ballast dimmable 2. wide voltage range: ... RS485/TTL 4.CE,UL,FCC,CUL 150W HPS digital electronic ballast CE,UL,FCC,CULModelHPS-150W-DLighting Source ... line driven (The ballast can be installed far from lamp and is easy to maintain.)·High quality of illumination ... : protection for open loop, short loop and hot lamp restart·Low temperature rise, applicable to wind range of ...