1、Auto focusing PWM tracking charging, high charging efficiency, non‑stop detection during charging, two‑way focusing tracking. 2、Built-in overheating, overcurrent, short circuit, open circuit protection, troubleshooting, and automatic controller recovery. 3、Two‑way MOS tube anti‑backflow circuit, high‑power charging mode, ultra‑low heat. 4、Charge 12V/24V lithium battery, ultra‑wide charge and discharge adjustable. When the output is off, the minute is adjustable, which is more convenient. 5、Built‑in short circuit protection, open circuit protection, reverse connection protection, overload protection. Item Type: Solar Charge Controller Material: ABS Color: As shown in the picture Product Size: Approx. 13.5x7x3.2cm / 5.3x2.8x1.3in Weight: Approx.152g/5.4oz Rated Current: 20A Display: LCD screen Self-Consumption: <10MA Working Temperature: -35℃-60℃ The regulator is suitable for batteries: OPEN, AGM, GEL How to Use 1 x Solar Charge Controller 1 x Chinese and English Instruction