Features: LCD displays voltage, current, charge and discharge status. With temperature compensation function, output switch, 2 USB interface. 12V or 24V automatic detection. Intelligent multi-purpose solar charge and discharge controller, the control parameters can be flexibly set, fully meet your different application requirements. With short circuit protection, low voltage protection, overcharge protection, overload protection, ground protection, short circuit protection, reverse polarity protection function. Specifications: Rated Current: 10A or 20A (Optional) Material: ABS Rated Voltage: 12 or 24V automatic detection Item Size: 132 x 68 x 33mm or 5.20 x 2.68 x 1.30in Item Weight: 120g or 4.23oz Package Weight: 160g or 5.64oz Package Size: 15.2 x 9 x 5cm or 5.98 x 3.54 x 1.96in Packing List: 1 x Controller Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.