Specification: Item Type: Solar Charge Controller Material: ABS, Aluminum Alloy Rated Working Current: 80A Rated Working Voltage: 12V/24V Solar Panel Voltage: ≤48V Floating Voltage: 13.8V/27.6V Undervoltage Protection: 10.7V/21.4V Undervoltage Recovery: 12.5V/25.0V No-load Loss: -≤25mA Loop Pressure Drop: ≤160mV Temperature Compensation: -≤4mV/Cel/℃ Working Temperature: -10℃ to 60℃ Storage Temperature: -30℃ to 70℃ Humidity Requirements: ≤90%, No Condensation Usb Charging Function: 5V Charging (applicable to 500mA) Mobile Phone Charging Pwm Smart Charging Solar Controller 12V/24V 80A Weight: Approx.735g / 25.9oz The main features of the product: 1. Large LCD display 2. Simple operation 3. PWM charging method 4. Adjustable charge and discharge control parameters 5. One key to open and close the load 6. One key to restore factory settings 7. Battery reverse discharge protection 8. Battery reverse connection protection 9. Battery undervoltage protection 10. Overload and short circuit protection 11. Automatic temperature compensation function Package List: 1 x Solar Charge Controller 1 x Joint 1 x User Manual Note: Note the positive and negative connections