Feature:1. Reliable Work: Compatible with 12V 24V systems, can manage the solar panels and batteries with built in industrial micro controller.2. Smart Control: 5V 2.5A dual USB output enable quick and flexible charging of phone, tablet, computer and other devices, very useful.3. Easy Charging: Fast charging, large charging and floating charging 3 phase PWM charging control effectively prolong the battery life.4. Safer Working: Has good protection with over current, short circuit, reverse connection, low voltage, overcharge, safe and reliable.5. Practical Use: Suitable for solar power generation system, smart home, solar charger, solar ventilation system, solar light box, etc.How to Use:1. Connect the battery, solar panel and load in the correct order; 2. Unscrew the screw, put the wire in the small hole and screw it in to tighten it. Specification:Item Type: Solar Charge ControllerSystem Voltage: 12V 24V automatic adaptation (11.1V 12.8V adjustable). Maximum Photovoltaic Voltage: 12V system < 25V or 24V system < 50VUSB Output: 5V 2A, maximum. Standby Current: <10mAWorking Environment Temperature: -35℃~+60℃ Package List:1 x Solar Charge Controller1 x English User ManualNote:This controller can only use photovoltaic panels as a charging power source. Do not use DC power or other power sources as charging power.