Automatically manage the working of solar panel and battery in solar system.Overloading & short-circuit protection.Reverse discharging & reverse-polarity protection.Under-voltage and over-charging protection.Protection from anti-thunder strike.Prolong the battery life cycle and keep the load work well.Easy to set up and operate.Suitable for small solar energy system.Colour:BlackMaterial:plasticRated Charge Current: 20ADue to different batches, there may be differences in product appearance and printed text, which will not affect usePackage Contents:1 * Auto Solar Charge ControllerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.