Was intended for another grid tie i did not install. 22-60 volt dc input. I run 6 / 12 volt solar panels on these in a series , to make 24 volts dc input power to this unit. The item “SUN-600G 600W Watt Micro Grid Tie Solar Power Inverter Solar Panel 120V AC NEW” is in sale since Wednesday, February 21, 2018. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “bigcaravan” and is located in Elk River, Minnesota. This item can be shipped to United States.