1、Easy to use, this solar controller has a built in industrial microcontroller, and the controller automatically adapts to the 12V/24V battery system. 2、Adopting a portable USB dual port design, the output is 5V/3A, and it is designated to charge electronic devices or appliances. 3、Using PWM technology and electronic protection technology, charge controller has the functions of short circuit protection, overload protection, reverse connection protection, low voltage disconnection setting, low voltage discharge reconnection setting, etc. 4、Large screen LCD display, adjustable timer control mode, 3 options to adjust the time period of battery discharge. 5、Adjustable charging and discharging parameters to prevent your equipment or appliances from unnecessarily depleting the battery and smart discharge battery. 1 x Solar Controller1 x User Manual Item Type: Solar ControllerMaterial: ABSVoltage: 12V/24V Automatic IdentificationFloating Voltage: 13.7V (default Value, Adjustable)Low Voltage Disconnect: 10.7V (default Value, Adjustable)Low Voltage Recovery: 12.6V (default Value, Adjustable)USB Output: 5V/3ACharging Method: PWM Pulse ModulationWorking Temperature: -35℃ to +60℃