All parameters displayed on the LCD screen. Equipped with output switch for intelligent control. Fully automatic operation. Digital accuracy ensured by microcontroller. One-key operation to open and close the load. PWM charging mode (SOC). Separate temperature detection circuit with high-precision temperature compensation. Charging input via DC 12V and USB 5V, suitable for DC lamps and phone charging. Protection features include overvoltage protection, short circuit protection, light protection, undervoltage protection, overcharge protection, and reverse polarity protection. Well-built with reliable performance. Easy to use and designed for 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 loss: 0.05W Control mode: Intelligent software control Working temperature range: -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 the actual item. Measurement allows an error of +/- 1-3cm.