SCM40 PWMFeatures: High efficiency: your batteries are charged quickly Capacity for solar panel configurations of up to 3600 Wp Suitable for AGM, gel, wet and Mastervolt Lithium Ion batteries Fast and flexible setting of battery type Battery temperature sensor for long lifespan Automatic 12V and 24V detection Switchable output Noiseless operation LCD display Fully protected against overtemperature, overload, high/low battery voltage, high/low PV voltage, short circuit and reverse polarity Specifications: System Voltage Battery: 12/24V auto select Battery Types: AGM, gel, wet, Lithium Ion Battery Temp Sensor: Yes Max Charge Current at 25 degrees C/77 degrees F: 40A Switchable Output (Max Current): 40A Energy Comsumption (night): 4 mA Communication: PC-Link (optional) Cooling: passive Display/Read-Out: LCD display with battery state of charge, status output, battery setting