Features:brand new and high qualityIndustrial-grade main control chip, 16-level AD sampling accuracy. Temperature, charging current and discharging current are accurately displayed in real for time, and the power generation is clear at glance.MPPT auto-focusing technology track charging, with high charging efficiency, detection during charging, and two-way focusing tracking.Large LCD display with adjustable charging and discharging parameters. The ultra-wide charging and discharging parameters can be adjusted, so long as the characteristics of the battery and its corresponding charging parameters are known, it can be used to charge battery, and the output is turned off. Minutes and hours can be adjusted, so it is more convenient.Complete 3 stage charge management to effectively protect the battery and make the battery more durable.Built in over heat, overcurrent, short circuit and reverse connect for protection. When the fault is eliminated, controller itself automatically resumes operation without damaging controller. Specifications:Material:Fireproof for Shell and Aluminum PlateVoltage: 12 or 24VCurrent: 30A or 40A or 50A or 60A or 80A or 100ASize:Approx.168x95 mm or 6.61x3.74 inches 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:1x Solar Charging Controller