10A 12V/24V 120W/240W PV System PWM Solar Battery Charge Controller Regulator Waterproof IP68 IP68 waterproof level and aluminum outer shell is able to effectively prevent various kinds of corrosion. Automatic identification of 12V/24V system voltage, temperature compensation function Over-load and short-circuit protection, Over-charge and over-discharge protection, Over-voltage and low-voltage protection, Reverse discharge and reverse polarity protection. Voltage of battery: 12V / 24V, Maximum voltage of solar panel: 36V, Maximum power of solar panel: 120W for 12V battery, or 240W for 24V battery, Maximum charging current: 10A Automatically manage the work of solar panel, battery and load in solar system with a series of perfect protection functions. It is widely used in solar system for gardens, pools, roads, stages, etc.