This product provides short circuit protection, open circuit protection, reverse protection and overload protection. Perfectly and safely used in various applications, such as domestic, industrial, commercial, etc. Adopt PWM charging management to improve charging efficiency. Adjustable floating charge voltage, discharge shutdown voltage and discharge reconnection voltage. The solar charge controller equipped with dual USB ports supports 5V/2.5A USB output max. The solar controller can clearly display the status and data, and can easily switch modes and settings. Automatically adapts to 12V/24V battery voltage, easy to operate. to use. This product monitors the battery voltage and opens the circuit. Additionally, when the battery voltage reaches a certain level, battery charging stops. This product is designed for lead-acid batteries: OPEN, AGM, GEL, and not for Ni-MH, Li-ion or other batteries. Material: ABS Battery voltage: 12V/24V adaptive Color of item: blue and black Charging current: 20A Maximum power: 240W (12V), 480W (24V) Charging current: Discharge: 10A, 20A, 30A Maximum solar input: &lt;50V Floating voltage: 13.7V (default, adjustable) DC voltage: 13.7V (default, adjustable) #39;Discharge shutdown: 10.7V (default, adjustable) Discharge reconnection voltage: 12.6V (default, adjustable) Charge reconnection : 13 V Self-consumption: Item size: 133 * 70 * 35mm/5.24 * 2.76 * 1.38in Item weight: 134 grams / 4.73 ounces Note: 1. Before installation, make sure your battery voltage is enough for the controller to recognize the battery type. 2. The battery cable should be as short as possible to reduce losses. 3. The regulator is only suitable for lead-acid batteries: OPEN, AGM, GEL. (Not applicable to Ni-MH, Li-ion or other batteries) 4. This controller can only use photovoltaic panels as a charging source. Do not use DC power or other power sources as charging power sources. Packing list: < p>1*solar charge controller