I ordered this unit for the price and flexibility to be fully off grid. Here in the USA, 220v appliances are scarce, so I use a step down converter to go from the units 220v ac to 115v ac in my cargo camper equiped with two 305watt solar panels and two 181ah 12v telecomm batteries (in series). This all in one hybrid covers all the bases (pwm solar charge controller, inverter, shore power battery charger and converter). With a separate stepdown to 115v for the States, you have a pretty much plug and play option.I must admit, I had a problem with my first unit the day I received it in the mail. I contacted the seller, and within 5 days, I had a fully functional replacement. I am in IT for 20 years (former eBay employee), so I know things happen during shipping and equipment sometimes gets dingged around.* 5 stars for service. The seller is responsive and responsible.* 5 stars for the product that works as advertised.* 5 stars for the best value for my money.Very satisfied and would buy again from this seller.