General description Solar Panel Charge Controller Regulator with LED Display is designed for 12-24V systems, providing safe protection for your solar battery. This controller features built-in electronic components that do not require replacements, ensuring long-lasting performance. It offers multiple charging modes, including pure lighting control, lighting control with timing, manual operation, and debugging, enhancing the versatility of your solar setup. Technical specifications Color: Black Material: Plastic Rated voltage: 12V / 24V (Automatic switching) Max. Charge/Discharge Current: 20A Solar Panel Input Voltage: ≤50V Charge Stop Voltage: 14.7V/29.4V Low Voltage Recovery: 12.2V/24.4V Low Voltage Protection: 10.5V/21.0V USB Output Voltage/Current: 5V 2A No Load Loss: ≤10mA Temperature Compensation: -3mV/Cell/°C Operating Temperature: -20°C~60°C Other information Protection features: Overcharge Protection, Short Circuit Protection, Lightning Protection, Undervoltage Protection,