1,MPPT Technology: The solar controller adopts a high efficiency boost MPPT charging method, which has the functions of preventing overcharging, anti reverse charging, anti reverse and short circuit protection. 2,Solar Panel: This solar charge controller is powered by solar panel, which reduces battery power consumption and prolongs service life. 3,Simple System: This solar controller can set the charging constant voltage point, compatible with ordinary acid batteries, easy to operate, safe and reliable. 4,Three Voltage Levels: You can set the battery voltage level of the controller with one key, there are 48V, 60V and 72V. 5,Clear and Visible: The controller is equipped with LED indicators, and the digital tube will display the charging current, battery voltage and the actual input voltage time of the photovoltaic panel,the operating status is clear at a glance. 1 x Controller1 x Insurance Tube Item Type: Solar Charge ControllerModel: JN-EVSMaterial: Aluminum AlloyUses: Solar charge and discharge controlPV Open Circuit Voltage: 16V-50VMPTT Voltage Range: 16V-45VMPPT Efficiency: ≥99%Efficiency: ≥95%Load Loss: andlt; 5mAPV Panel Maximum Input Power: 18V200W, 36V400W Battery: 48V or 60V or 72V (One key setting) 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.