SCM40 PWMFeatures:High efficiency: your batteries are charged quicklyCapacity for solar panel configurations of up to 3600 WpSuitable for AGM, gel, wet and Mastervolt Lithium Ion batteriesFast and flexible setting of battery typeBattery temperature sensor for long lifespanAutomatic 12V and 24V detectionSwitchable outputNoiseless operationLCD displayFully protected against overtemperature, overload, high/low battery voltage, high/low PV voltage, short circuit and reverse polaritySpecifications:System Voltage Battery: 12/24V auto selectBattery Types: AGM, gel, wet, Lithium IonBattery Temp Sensor: YesMax Charge Current at 25 degrees C/77 degrees F: 40ASwitchable Output (Max Current): 40AEnergy Comsumption (night): 4 mACommunication: PC-Link (optional)Cooling: passiveDisplay/Read-Out: LCD display with battery state of charge, status output, battery setting