Features Safe Charging: This solar charge controller uses a 3-stage PWM charging algorithm to ensure balanced battery charging and discharging, which can extend the life of the battery. Automatic Identification: This solar panel regulator realises automatic identification of 12V and 24V systems, as well as automatic adjustment of charging parameters, and also has a temperature compensation function. Protection Functions: This solar discharge controller is able to provide overcharge protection, overdischarge protection, overload protection and short circuit protection to ensure safety. LCD Display: This solar charge controller is designed with a graphic LCD screen for better viewing and easier work, while the clear operating panel will bring you more convenience. Easy To Install: This solar panel regulator is lightweight and small in size, simple installation can be done quickly in minutes, saving time and effort. Specification: Item Type: Solar Charge Controller Material: ABS Current: 10A Voltage: 12V 24V automatic recognition.  Solar Input Voltage: Less than 55V.  USB Output: 5V 1A Operating Temperature: -25℃ to 55℃ Protection Class: IP30 Package List: 1 x Solar Charge Controller 1 x User Manual Note: 1. When connecting to a 24V system, the terminal voltage of the battery board may exceed the safe voltage of the human body. If operation is required, insulated tools should be used and hands must be dry. 2. If the battery is reversely connected, the controller will not be damaged, but there may be negative voltage output at the load end, which may damage your load equipment. Take care to avoid this. 3. In a 24V system, if one end of the battery or solar panel is reversely connected, the controller is likely to be damaged. 4. A large amount of electrical energy is stored in the battery. Therefore, battery short circuit cannot occur under any circumstances. We recommend connecting the fuses on the battery in series. 5. The battery may produce flammable gas, so keep away from sparks. 6. Please ensure that children are kept away from batteries and controllers. 7. Follow the safety advice given by the battery manufacturer. Package List 1 x Solar Charge Controller 1 x User Manual