Automatically manages the operation of solar panels and batteries in a solar system. Provides overloading and short-circuit protection. Includes reverse discharge and reverse polarity protection. Offers under-voltage and over-charging protection. Features protection against lightning surges. Helps prolong battery life cycle and ensures stable load performance. Easy to install and operate. Suitable for small solar energy systems. Color: Black. Material: Plastic. Rated Charge Current: 20A. Product appearance and printed text may vary slightly between batches, but this does not affect functionality. Package includes: 1 x Auto Solar Charge Controller. Other items not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.