All parameters displayed on the LCD screen. Equipped with output switch for intelligent control. Fully automatic operation. Digital precision controlled by microcontroller. One-key operation to open and close the load. PWM charging mode (SOC). Integrated temperature detection circuit with high-precision temperature compensation. Dual charging input: DC 12V and USB 5V, suitable for DC lamps and mobile devices. Comprehensive protection features: overvoltage protection, short circuit protection, light protection, undervoltage protection, overcharge protection, reverse polarity protection. Well-built design with reliable performance. User-friendly interface. Long service life. Specifications: Battery voltage: 12V Nominal charge/discharge current: 20A USB output voltage: 5V Total USB output current: 3A DC output voltage: 12V Total DC output current: 2A Overload/short circuit protection: 1.5 times rated current Short circuit recovery time: 10 seconds Solar panel open circuit voltage: 40V No-load power consumption: 0.05W Control method: Intelligent software control Operating temperature: -35°C to 55°C Color: Black Material: ABS Dimensions: 135 x 100 x 30mm Package includes: 1 x Solar charge controller 2 x Charging cables Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight color variations between the product image and actual item. Measurement allows an error of +/- 1-3cm.