RioRand (TM) MPPT Solar regulator 40A / Charge Power Controller / max.pv panel input 100v New RioRand MPPT technology; Excellent thermal design and nature air cooling; CE certificate; Nominal System Voltage:12VDC / 24VDC Auto work Rated Charge Current: 40A Rated Discharge Current:20A Maximum Battery Voltage:32V Max. Solar Input Voltage:100VDC Max. PV input power: 12V / 520W,24V / 1040W Electronic protection: over chargiElectronic protection: over charging, over discharging, overload, short circuit. Reverse protection: any combination of solar module and battery, without causing damage to any component.