Feature:1. Industrialgrade main control chip and largescreen LCD display, with adjustable charge and discharge parameters.2. With a complete 3stage PWM charging management and dual MOS antibackflow circuit with ultralow heat generation.3. The product builtin overcurrent/shortcircuit protection, opencircuit protection, and reverse connection protection, all of which are selfhealing and do not damage the controller.4. This solar controller has a builtin industrial microcontroller, which can automatically manage the work of solar panels and batteries in the solar system.5. This product is widely suitable for family, industry, business, etc., and is very practical.Specification:Item Type: Solar Panel ControllerProduct Material: PVCProduct Specifications: 12V/24V 20ARated Charging Current: 20ARated Discharge Current: 10AUSB Output: 5V/3ASize: Approx. 148.57mm / 5.8in139.89mm / 5.5in55.71mm / 2.2in77.99mm / 3.1in.Package List:1 x Solar Panel Controller1 x User Manual