ITEM NAME:20A LCD Solar Charge Controller Auto Regulator Current Display US M6I4 E5F5 20A LCD Solar Charge Controller Auto Regulator Current Display US M6I4 E5F5 P6D8 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. Adds current display function. Battery over temperature protection, low voltage/reverse polarity protection. Over-load and short-circuit protection. With dual USB 5V output. Color: Black + Blue Material: Plastic Rated Voltage: 12V / 24V (Auto Switch) Max. Charge/Discharge Current: 20A Max. Solar Panel Input Voltage: less than equal 50V Stop Charge 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: less than equal 10mA Temperature Compensation: -3mV/Cell/ Degrees Celsius Operation Temperature: -20 Degrees Celsius ~60 Degrees Celsius Item Size: 13 * 6.8 * 3.2cm / 5.12 * 2.67 * 1.26in Item Weight: 119g~152g / 4.21oz~5.38oz Package Contents 1 * Solar Charge Controller 1 * User Manual Note: Light shooting 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.