100% brand new and high quality Visual LCD graphic symbol, 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+Blue Dimension: 150 *78 * 35mm (L*W*H) Material: Plastic Rated Voltage: 12V / 24V (Auto Switch / Auto Regulator) Max. Solar Panel Input Voltage: 50V Stop Charge Voltage: 14.7V/29.4V Low Voltage Recovery: 12.6V/24.4V Low Voltage Protection: 10.5V/21.0V USB Output Voltage/Current: 5V 2A No Load Loss: less than 10mA Temperature Compensation: -3mV/Cell/Centigrade Package Contents: 1x 30A Solar Contorller 1x User Manual Only 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.