Operating voltage 20V - 30VDC (standard 24V), Current consumption 1.48 amp (at 24 V) To drive a sodium low pressure lamp 35 W. Ambient temperature -15 deg ... + 40 deg C Max. case temperature Tc 80 deg C Life time: >100.000 h / 80 deg C / > 90% Energy class A3 Dimensions: L 230mm, w 30mm, h 29mm Ballast supply unit for low pressure discharge lamps, battery powered. Max. Distance fixture / ballast: 1 meter Ballast Versorgungseinheit für Natriumdampfniederdrucklampe für Batteriebetrieb. Max. Distanz Leuchte / Vorschaltgerät: 1 Meter.