and high qualityVisual LCD graphic , brief key operation.Automatic identification system voltage level, intelligent PWM charge mode. Adjustable charge/discharge control parameters, settable operating modes of loads.Multiple selection of battery. Battery over temperature protection, low voltage/reverse polarity protection.Over-load and short-circuit protection. With dual (x2) USB output ports.Specifications:Color: Black+BlueDimension: 150 *78 * 35mm (L*W*H)Material: PlasticRated Voltage: 12V / 24V (Auto Switch / Auto Regulator)Max. Solar Panel Input Voltage: 50VStop Charge Voltage: 14.7V/29.4VLow Voltage Recovery: 12.6V/24.4VLow Voltage Protection: 10.5V/21.0VUSB Output Voltage/Current: 5V 2ANo Load Loss: less than 10mATemperature Compensation: -3mV/Cell/CentigradePackage Contents:1x 30A Solar Contorller1x User ManualOnly the above package content, other products are not included.Note: Light 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.