... /0-10V/RS232/RS485/TTL 4.CE,UL,FCC,CUL 150W HPS digital electronic ballast CE,UL,FCC,CULModelHPS-150W-DLighting Source ... ·Long line driven (The ballast can be installed far from lamp and is easy to maintain.)·High quality of illumination, no ... ·Full protection: protection for open loop, short loop and hot lamp restart·Low temperature rise, applicable to wind range of environmental ...