Description: LCD screen display all parameters. With output switch, intelligent control, easy to operate. Fully automatic operation. Microcontroller digital accuracy. A key to open and close the load. Specification: Color: Black Material: Plastic Size: Approx. 135x100x30mm / 5.31x3.94x1.18inch Voltage of Battery: 12V / 24V Automatic Rated 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 by Rated Current Short Circuit Recovery Time: 10s Open Circuit Voltage of Solar Panel: 40V No Load Loss: 0.05W Over Voltage Protection: 15V; x2 / 24V Float Charge Voltage: 14V; x2 / 24V Discharge Recovery Voltage: 12V; x2 / 24V Over Discharge Voltage: 10.5V; x2 / 24V Control Mode: Software Intelligent Control Working Temperature: -35~55°C Protection: Overload protection Short-circuit protection Lighting protection Under-voltage protection Over-charging protection Reverse polarity protection Size Chart: PWM charging mode(SOC). With separated temperature detected circuit, high precision temperature compensation function. DC 12V and USB 5V charging for DC lamp and phone. Package Includes: 1 Piece Solar Charge Controller 12V/24V Note: The color may be different for different display, pls understand Pls allow 1-3mm error due to hand test, thank you