Feature: 1. Support auto focus PWM tracking charging, high charging efficiency, non‑stop detection during charging. 2. Equipped with large-screen LCD display, adjustable charge and discharge parameters, with power-off memory function. 3. Built‑in overheating, overcurrent, short circuit, open circuit protection, troubleshooting, and controller automatically recovers. 4. Using dual‑way MOS tube anti‑backflow circuit, high‑power charging mode, safe and reliable to use. 5. Dual reverse current protection, low heat generation, with short circuit protection, open circuit protection, reverse connection protection, overload protection. Specification: Item Type: Solar Charge Controller Material: ABS Rated Voltage: 12V 24V Automatic (12V is suitable for 18V solar panels, 24V is suitable for 36V solar panels) Rated Current: 50A Display: LCD Screen Self-Consumption: <10MA Overcharge Protection: 14.4V/28.8V Charging Recovery Voltage: 12.6V/25.2V Over Discharge Protection: 10.7V/21.4V Over Discharge Recovery: 12.6V/25.2V Dual USB Output: 5V/2A (Charging mobile phone, etc.) Working temperature: -35℃-60℃ Regulator Suitable Batteries: OPEN, AGM, GEL Weight: Approx. 153g / 5.4oz Product Size: Approx. 13.5x7.2x3.2cm / 5.3x2.8x1.3in How to Use: Connect the positive and negative poles of the battery to controller, and the controller will automatically detect the battery voltage and connect the solar panel to the controller.. Package List: 1 x Solar Charge Controller1 x Chinese and English 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.