100% brand new and high quality Features: Multiple working modes are available: DC-DC power supply and battery charging working mode; MPPT solar charging mode (battery must be above 12V). Multiple interface displays: LCD can display input voltage/output voltage/temperature, output current/output power/output capacity/output time. Numerically controlled constant voltage and constant current adjustment, precise and fast, step-down output, output voltage 0-100V arbitrarily adjustable. It has a variety of software protection mechanisms, and the protection threshold can be set and adjusted. The relay is physically isolated to prevent reverse connection, safer charging, and intelligent switching of multiple charging modes. Specifications: Material: ABS Input Voltage Range: 10-110v Output Voltage Range: 0-100v Step-down Output Power Range: 0-1000w Typical Output Ripple: 300mv Peak-to-peak Value Capacity Measurement Range: 0-999.9ah Statistical Time Range: 0-100 Hours Panel Size: Approx. 79x43x25mm/3.11x1.69x0.98inch Motherboard Size: Approx. 130x90x40mm/5.12x3.54x1.57inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 Set Voltage Regulator