... warranty 35W,50W,70W,150W,250W,400W MH digital ballast for commercial lighting <70w technical dataModelMH-70W-ELighting Source TypeMH&HPS 70WInput ... out power with input voltage fluctuation·Long line drive, The ballast can be installed far away from lamp and is easy to ... on power network ·Full protection, protection for open loop, short loop and hot lamp restart ·Low temperature rise, applicable to ...