Features: LCD displays voltage, current, charge and discharge status. With temperature compensation function, output switch, 2 USB interface. 12V/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 / 20A (Optional) Material: ABS Rated Voltage: 12/24V automatic detection Item Size: 132 * 68 * 33mm / 5.20 * 2.68 * 1.30in Item Weight: 120g / 4.23oz Package Weight: 160g / 5.64oz Package Size: 15.2 * 9 * 5cm / 5.98 * 3.54 * 1.96in Packing List: 1 * Controller