... 5 years warranty 35W,50W,70W,150W,250W,400W MH digital ballast for commercial lighting <70w technical dataModelMH-70W-ELighting Source TypeMH&HPS ... stable performance·Wide range of operation voltage, suitable for large voltage fluctuation circumstances ·Lower current to start, ... compensation capacitorTesting ReportMounting diagram 35W,50W,70W,150W,250W,400W MH digital ballast for commercial lighting