IP68 Waterproof Solar Charge Controller 1,Stree light solar controller 2,1 year warranty 3,PWM Control KM-5A, 10A, 15A,20A,30A light ... Light flashes 3 times per second, said third controller working hours (full power), according to the time adjustment key to set ... battery inherent characteristics4 Science of battery management,5 with a power-down save function parameters, namely the system model and ...