The Helvar EL SC 1x39HFC now a Helvar EL1x39sc is a dimmable high frequency ballast is to run 1 x 39w T5 and 1 x 39w PL-L fluoresent tube. They can be dimmed from 1-100%, extremeley low energy consumption, Flicerless light, Optimum cathode control and simultaneous lighting control by switch-control and analog control.
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