solar panel controller 1) charge and dicharge 2) 12V/24V auto, 5A ... /24V 10A)Model: STK-20Description:The solar controller is applied to solar street light, solar garden light, solar lawn lamp, solar lamp box, solar advertising board, solar traffic ... /24V, 30ARated working current: 30A Rated working voltage: 12V/24V Voltage of solar panels ≤50V Float charging voltage(settable): 13.8V/27.6V Low ...