The PWM solar controller is a multi-purpose solar charge and discharge controller, each parameter can be flexibly set to meet your different application needs. It can be widely used on a solar home system, traffic signal, solar street light, solar garden lamp, etc. [Multi-ports] Solar controller with dual USB output & dual DC output, and applicable for lead-acid, batteries[Alloy Cooling Backplane] It can quickly dissipate heat to prevent the circuit from heating due to the long-term operation of the device[Multi-protection] The PWM charging method support overload, short circuit protection, battery Undervoltage protection, temperature compensation function, reverse battery protection[LCD Display] LCD screen for dynamically displaying the device's operating data and working conditions[Automatically] The solar charge controller can set time control mode, and system voltage can automatic identified Specifications: Rated Load Current(A): 30A;50A (Optional)Rated Voltage(Va):12/24V AutoUSB output: 2.1A*2DC output: 2Over Charge Current(V): 13.7V/*2 24VOver Discharge Current(V):10.5-11V/*2 24VTemperature Compensation:-3mv//cellEmpty Load Wastage:<45mALoop Voltage Drop:<200mvDisplay: LCD displayCharging type: PWMWaterproof grade: IP32Material: PlasticOccasion: Outdoor, Home, Camping, etc Note: Only 30A Solar Controller does not show charging current, 50A shows charging current. Package included: 1 x Solar Charge Controller 1 x English Manual