1.PWM control 2.Voltage limiting and current-limiting charge mode 3.SD card function 4.Warranty ... ContentBattery Voltage, Wind Turbine Voltage, PV Voltage, Wind Turbine Current, PV Current, Wind Turbine Power, PV Power, Over Voltage, Under ... Over load protection, Short circuit protection, Lightning protectionWind turbine current limiting, Wind turbine automatic brake and manual brake.By-pass function ...