... solar controller,inverter & UPS auto switchover into one unit. It is safe,simple,convenient and high efficient.INPUT SOLAR, 18VA C , 220VOUTPUTAC,220VDC,12VUSB,5 ... ----55°CUPS SwitchoverAutomaticAutomaticChargeable by Electricity off grid solar inverter with UPS function (the battery not only can charge by solar panel ,but also by main electricy ...