Features 1Solar charge controller builtin industrial microchip with memory function and good storage function. 2Builtin maximum power tracking algorithm significantly improves the energy efficiency of the photovoltaic system. 3Equipped with LCD screen adjustable charge and discharge parameters with complete 3stage PWM charge management. 4Using advanced digital power technology the circuit energy conversion efficiency is as high as 98%. 5Double peak or multipeak tracking technology when the solar panel is shaded or part of the solar panel is damaged the maximum power can still be accurately tracked. 6The combination of multiple tracking algorithms can accurately track to the proper working point within 1 second MPPT tracking efficiency can up to 99.9%. 7With current-limiting charging mode when panel power is too large and the charging current is greater than the rated current the controller will automatically reduce charging efficiency. 8Internal overcurrent/shortcircuit protection opencircuit protection and reverse connection protection are all selfrecovery not damage controller dual MOS reverse current protection low heat generation. Specification Condition: 100% Brand NewItem Type: Solar Charge ControllerMaterial: ABS+ROHSWeight: Approx. 292g-345g / 10.3oz-12.2ozProduct Size: Approx. 17x9.4x3.6cm / 6.7x3.7x1.4in Package List 1 x Controller1 x Manual Note 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.