Features: 1.High Efficiency: Adopt maximum power tracking algorithm to significantly improve the energy efficiency of the system, faster response speed and higher tracking efficiency. 2.Protection: Solar charge controller has battery reverse connection protection, PV reverse connection protection, PV short circuit protection, charging overcurrent protection. 3.Temperature Detection: Built in temperature detection, through derating charging, no fan required, still stable operation in extreme temperature environment. 4.Charging Current Limiting: When the charging current is higher than the rated value, the controller automatically reduces the charging power to make the solar panel work at the rated charging current. 5.Wide Application: MPPT solar charge controller is suitable for home power generation, base station, RV, yacht, boat and other solar photovoltaic systems. Specification: Item Type: Solar Charge Controller Material: ABS Charging Type: MPPT Rated Voltage: DC 12V/24V automatic identification Maximum Charging Discharging Current: 40A Maximum Open Circuit Voltage of Solar Panel: 100V (in the lowest temperature), 92V (in the standard temperature of 25) Maximum PV Input Power: 520W(12V), 1040W(24V) USB Output Voltage: 5V/1A x 2 Standby Consumption: 50mA Operating Temperature: -20-+55 Terminal Wire Gauge: 110m/7AWG Waterproof Grade: IP30 Rechargeable Batteries: Plumbic acid battery, gel batteries, maintenance free plumbic acid battery, lithium battery Applicable Scenarios: Home power generation, base station, RV, yacht, boat and other solar photovoltaic systems. PackageList: 1 x Solar Charge Controller 1 x User Manual