Samlex Sec-2415a 24 Volt 15 Amp 3 Stage Advanced Fully Automatic Battery Charger / Power Supply IDEAL FOR CHARGING ALL TYPES OF 24 VOLT LEAD ACID BATTERIES INCLUDING FLOODED, ABSORBED GLASS MAT ( AGM ) AND GEL CELL ADVANCED SWITCH MODE DESIGN USER SELECTABLE AC INPUT VOLTAGE: 120V / 60 Hz OR 230V / 50Hz BY MEANS OF A DIP SWITCH SETTING CONVERSION TO A TWO-STAGE ALGORITHM IS POSSIBLE TO CHARGE BATTERIES CONNECTED TO A DC LOAD (DC UPS) THIS UNIT CAN ALSO BE USED AS A DC POWER SUPPLY