[Efficient Battery Management] The built-in industrial microcontroller can automatically recognize 12V and 24V battery systems, and the three-stage PWM charging helps to extend battery life. Additionally, the controller has intelligent protection features for overcurrent, short circuit, reverse, low voltage, and overcharge, which ensures that the system runs safely and efficiently. [Convenient Monitoring and Control] The LCD display allows for easy monitoring of the status and data of the solar energy system, and the controller offers light control and time control functions. You can easily adjust the load mode as needed, and the controller remembers various user settings, eliminating the need to reset it if the battery is depleted. [USB Outputs] The controller features USB outputs of 5V/2.5A (max), making it convenient to charge mobile phones, tablets, and PCs. Colour:Black Material:Plastic Type:20A Package Contents: 1x Solar Charge Controller