1、EASY TO CONNECT: The positive poles of solar panel, battery, and solar charge controller are all connected together, with 12V 24V automatic identification system voltage. 2、MULTIPLE FUNCTIONS: Selectable load control method, resettable timer, discharge capacity control and AH discharge counter, this solar controller has complete functions. 3、DATA STORAGE: The solar panel conditioner can record the total operating time of the system, error timers during operation and the number of times the battery is fully charged. 4、CIRCUIT PROTECTION: With reliable overvoltage, short circuit, overload, overcharge, overdischarge and reverse polarity protection, the solar panel controller is safe to operate. 5、SAFE OPERATION: This LCD solar charge controller has accurate temperature compensation, automatically corrects the charge and discharge voltage, greatly improving battery life. 1 x Solar Charge Controller1 x User Manual Item Type: Solar Charge ControllerProduct Model: PVSC 50AProduct Voltage: 12V 24V automatic identificationMaximum Solar Panel Input Voltage: 55VSelf Consumption: ≤10MAMaximum Charging Current: 50AMaximum Discharge Current: 50AOverload Protection: Yes, restart once after 2 minutesWorking Environment Temperature: -20℃-+55℃Protection Class: IP30USB Output: 5V 2.1ADC Output: 12V 24V