Electronic ballast unit for the daylight lamp base Broncolor HMI F575.800. Equipped with a compact and robust aluminum housing. With LED-display for operation control, mains control as well as earth conductor monitoring. Automatic adaptation to the respective mains voltage from 90 to 265 V. Equipped with dimmer 100% - 60% as well as thermo-protection. Automatic recognition of the set power level of the connected lamp base (575 W or 800 W).