|Lumatek Electronic Ballasts offer up to 30% more lumens over old-style magnetic ballasts. Sold into government research facilities and major nurseries along with top universities and numerous publicly traded companies, they provide a stable light output and have a fast start-up. The Lumatek Electronic Ballast is completely silent and produces less heat than standard ballasts. This ballast has cut-off circuitry and allows for a longer bulb life. It also features a super lumen switch! This feature will boost lumen output by 10% when activated. This allows unprecedented control of lumen output during ballast use (Note: this feature is only for HPS lamps) which allows you to boost the lumen output of ageing lamps and therefore extend their useful life.