Features Safer Charging Use a 3-stage PWM charging algorithm to ensure balanced charging and discharging of the battery, which can extend the life of the battery. Easy to Install With light weight and compact size, the easy installation can be completed quickly within a few minutes. Auto operation: allows automatic detection on 12V and 24V systems, as well as automatic adjustment of charging parameters, also has temperature compensation. Work safety: can provide overcharge protection, over-discharge protection, overload protection, short circuit protection, etc. for safety reasons. BETTER DISPLAY The graphic LCD screen allows for better viewing for easier working, while the clear control panel brings you more convenience. Specification: Item Type: Solar Charge Controller Material: ABS Current: 10 A. Voltage: 12V 24V automatic detection. Solar input voltage: less than 55V USB Output: 5V 1A Operating temperature: -25°C to 55°C. Protection class: IP30. Package list: 1 x solar charge controller. 1 x user manual (English language not guaranteed). Tips: 1. When connected to a 24V system, the terminal voltage of the battery board can exceed the safe voltage of the human body. If surgery is required, insulated tools should be used and hands must be dry. 2. If the battery is connected incorrectly, the controller will not be damaged, but at the end of the load there may be a negative voltage output that can damage your load equipment. Make sure to avoid this. 3. If one end of the battery or solar panel is connected incorrectly in a 24V system, the controller is likely to be damaged. 4. A large amount of electrical energy is stored in the battery. Therefore, under no circumstances can there be a battery short circuit. We recommend that you connect the fuses on the battery in series. 5. The battery can produce flammable gas, so keep away from sparks. 6. Please make sure children are kept away from batteries and controllers. 7. Follow the safety instructions of the battery manufacturer. Package List 1 x Solar Charge Controller 1 x User Manual