Compared with normal PWM solar charge controller, this MPPT + PWM controller could increase efficiency by 10%-30%LCD screen displayEasy operation interfaceMPPT+PWM charging mode?Controller Provided MPPT Maximum power point tracking Function,charging mode is PWM)Parameter user can resetA key to open and close the loadA key to restore the factory settingsAutomatic temperature compensation functionCan charge and discharge at the same time, Always keep the battery in full statusMPPT 10AMPPT 10A Solar Panel Charge Controller Regulator Solar panel 130W/12V 260W/24V (Without USB Output)Compatible with 260W(24v) solar panel with dark activated function, Max current is 10A Timer Intigrated (Lighting function)MPPT 20AMPPT 20A Solar Panel Charge Controller Regulator Solar panel 260W/12V 520W/24V (Without USB Output)Compatible with 520W(24v) solar panel with dark activated function, Max current is 20A Timer Intigrated (Lighting function)MPPT 30AMPPT 30A Solar Panel Charge Controller Regulator Solar panel 380W/12V 760W/24VCompatible with 760W(24v) solar panel with dark activated function, Max current is 30A Timer Intigrated (Lighting function)USB 5V charging (for 500mA) for mobile phone.MPPT 40AMPPT 40A Solar Panel Charge Controller Regulator Solar panel 500W/12V 1000W/24VCompatible with 1000W(24v) solar panel with dark activated function, Max current is 40A Timer Intigrated (Lighting function)USB 5V charging (for 500mA) for mobile phone.LCD Operating interface description