Description:    MPPT30 20\/30A 12V\/24V MPPT Solar Panel Regulator Charge Controller LED Indicator for PV               Features:   1.For a variety of types of batteries. 2.MPPT function. 3. Microprocessor controller pulse width modulation charging. 4.Temperature sensor battery charging compensation. 5.Overload protection (with self-recovery). 6.Overcharge protection. 7.Short-circuit protection (with self-recovery). 8. Lightning protection. 9. Reverse-discharge protection. 10. Reverse polarity protection (with self-recovery). 11. Undervoltage protection、 built-in temperature sensing control、 more stable performance、 more excellent.   Specifications:   1.Model: MPPT30 2.Max load Current: 20\/30A for your optional~ 3.Rated Voltage: 12\/24V 4.Charger loop drop: <250mV 5.Discharger loop drop: <50mV 6.No load lose:≤20mV 7.Efficiency: 95-97% 8.Max wire area: 2.5mm² 9.Ambient temperature: -25-55 C 11.Dimension(L×W×H): 192 X 112 X 53mm    Package Includes:      1 x MPPT30 Solar Charge Controller   1 x English User Manual    Details pictures: