Features: 1. Parameters Adjustable: The charging and discharging parameters of this controller are adjustable. So you can make adjustments for charging different types of batteries. 2. Charging Management: This controller possesses complete multi stage PWM charging management, which can be set as off charging, to better support voltage sensitive loads. 3. Multi Protection: The controller has built in reverse connection protection, open circuit protection, high temperature protection, over current and short circuit protection can be set, and they are self recovery type, without damaging the controller. 4. LCD Display: This controller has a large LCD display, which can provide you with easy and convenient data viewing and manipulating, you can choose it with confidence! 5. Wide Application: This controller is suitable for solar power generation system, solar street lamp, solar charger, solar light box, RV, etc. Specification Item Type: Solar Charge Controller Material: ABS Current: 20A Working Temperature: - 35℃ to 60℃ Altitude: Less than or equal to Approx. 3000m / 9842.5ft Protection Grade: IP32 Package List 1 x Solar Charge Controller3 x Red Terminal 3 x Black Terminal1 x Manual