Features: Multifunctional digital display system inform intuitively. Completed technical data for setup and modify. Automatic identification system voltage, 12V/24V automatic recognition. The product can automatically manage the work of Solar Panel and battery in solar system, which is below 180W(12V) or below 360W(24V) auto switch. Built-in over-load protect, short-circuit protect, lightning protect, reverse discharging protect, reverse-polarity protect, under-voltage protect, over-charging protect. Description: After the tests, output and input power is regular, ensure product qualified. Advanced technology and excellent quality, is believable and trustworthy. Specifications: Color:Black Output Voltage: 12V/24V Automatically distinguish voltage Max load Current: 12A Full Charge Cut: 13.7V/27.4V Low Voltage Cut: 10.5V/21V Temp ompensation: -3mv//cell Zero Load Loses: 20mA Min Wire Size: 20mA Min Wire Size: 2.5mm^2 Voltage Drop: