Efficient PWM Charging Technology enhances charging efficiency, extends battery life, and reduces energy loss. Wide Compatibility with automatic recognition for both 12V and 24V battery systems, allowing easy installation without complex adjustments. Built-in Dual USB Output Ports enable direct charging of mobile phones, tablets, cameras, and other USB-powered devices. Ideal for off-grid solar setups, RVs, campers, boats, and home solar applications. Suitable for camping, outdoor work, and emergency backup power use, turning your solar system into a convenient charging station. This dual USB solar charge controller adopts advanced PWM (Pulse Width Modulation) charging technology to improve charging efficiency, extend battery life, and reduce energy loss. It provides stable and reliable power management for 12V and 24V solar systems, suitable for off-grid solar setups, RVs, campers, boats, and home solar applications. The controller intelligently detects and supports both 12V and 24V battery systems, making it flexible for a variety of solar panel and battery configurations. Simply connect the battery and the controller will automatically identify the voltage, allowing for easy installation and setup without complex manual adjustments. Color: Black Material: ABS Package Contents: 1*Dual USB Solar Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.