Welcome to our store! 1. Dual MOS anti-backflow circuit, low heat generation. Complete 3-level smart PWM charging management, high efficiency. 2. Large LCD display with backlight, clearly shows system operation information and indicates status and data, convenient to switch modes and parameter configurations. 3. Adjustable charging and discharging parameters, with power-off memory function. Automatically recognizes 12V/24V system voltage. 4. Safe to use, built-in short-circuit protection, open-circuit protection, reverse connection protection, overcurrent protection. Can be used for home, industrial, commercial use, etc. 5. There are corresponding icon markings on the wiring terminals, used to connect batteries, solar panels, and DC loads. Install it in a well-ventilated place. Item Type: Solar Charge Controller Material: Plastic Rated Voltage: 12V/24V battery voltage Maximum Charge/Discharge Current: 30A Solar Panel Input Voltage Range: Maximum 18-450W/36V-900W Charging Mode: PWM Overvoltage Protection: 17V.34V Full Charge Cut-off: 13.7V/27.4V Undervoltage Cut-off: 10.5V/21V Over-discharge Recovery Voltage: 12.2V/24.4V 1 x Solar Charge Controller 1 x Manual 1 x Wire Connector Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!