• System voltage: 12 / 24V • Maximum voltage of solar panels: 50V • Own work current: ≤15mA • Maximum charging current: 30A • LVD: 10.7V 9V..12Vx2 24V • LVR: 12.6V / 11V..13.5Vx2 24V • Backup voltage: 13.6V / 13V..15Vx2 24V • Overcharge protection: 16.5Vx2 for 24V • Reverse polarity protection: Yes • Charging mode: PWM • Temperature compensation: -24mV / C for 12V installation; x2 for 24V • Working temperature: -35 to + 60 ° C • Wiring size: 28-10AWG • Dimensions: 187x98x50mm • Weight: 370g • USB: 2xbuilt-in USB 5V / 2A port