The built-in industrial-grade microcontroller automatically recognizes both 12V and 24V battery systems, and three-stage PWM charging helps extend battery life. Additionally, the controller features intelligent protections for overcurrent, short circuit, reverse polarity, low voltage, and overcharge, ensuring safe and efficient system operation. The LCD display allows users to easily monitor the status and data of the solar system. The controller provides both light and time control. You can easily adjust the load mode as needed, and the controller memorizes various user settings, eliminating the need to reset even when the battery is depleted. The controller features a 5V/2.5A (maximum) USB output for convenient charging of phones, tablets, and PCs. This solar controller is not waterproof; please install it indoors. Specification: 30A Battery (12V): Maximum solar panel input voltage is 25V, output power is 360W Battery (24V): Maximum solar panel input voltage is 50V, output power is 720W Color:Black Material:ABS Package Contents: 1 * 30A PWM Solar Charge Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.