1、Built in short circuit protection, open circuit protection, reverse protection and overload protection. 2、Can automatically manage the work of solar panels and accumulators in the solar system, with high work efficiency. 3、The solar charge controller is compatible with 12V and 24V systems, and the voltage 12V and 24V are automatically recognized. 4、Made of high quality materials, this solar charge controller is sturdy, durable, not easily damaged, and has a long service life. 5、Adopts sophisticated production technology, has excellent performance, simple operation and convenient use. 1 x Solar Charge Controller1 x Bolt Pen8 x Screw Accessories1 x User Manual Item Type: Solar Charge ControllerMaterial: ABSVoltage: 12V 24V Automatic RecognitionMaximum Power Generation Current: 10A 20AUSB Output: 5V 2ANo Load Loss: <20mACharging Method: For PWM