Feature:1. Auto‑focusing MPPT tracking charging, high charging efficiency, non‑stop detection during charging, two‑way focusing tracking.2. Charge 12V/24V lead-acid battery, ultra-wide charge and discharge adjustable.3. Built‑in overheating, overcurrent, short circuit, open circuit protection, troubleshooting, and automatic controller recovery.4. Two‑way MOS tube anti‑backflow circuit, high‑power charging mode, ultra‑low heat.5. R5.0 solar charging DC plug, R5.0 DC lamp output DC plug, easy to connect.Specification:Item Type: Solar Charge ControllerMaterial: ABSColor: As shown in the pictureProduct Size: Approx. 13.3x6.8x3cm / 5.2x2.7x1.2inWeight: Approx. 154g / 5.4ozRated Voltage: 12V (540W) 24V (1080w) automatic (12V is suitable for 18V solar panels, 24V is suitable for 36V solar panels)Rated Current: 40ACharging Mode: 6 stagesFunction: Charge 12V/24V lead-acid battery, ultra-wide adjustable charge and dischargeSelf-Consumption: <10MAOvercharge Protection: 14.4V/28.8VCharging Recovery Voltage: 13.2V/25.2VOver Discharge Protection: 10.7V/21.4VOver Discharge Recovery: 12.6V/25.2V Package List:1 x Solar Charge Controller1 x Chinese and English InstructionNote:1. Please allow 1‑2in 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.3. Without power storage function.