Runs very good ! But finding the serial # can be hard. They could say it's next to the bar code. Also the ECO mode switch could say on/ off switch , which 0 means off and - means On.
I've been looking for a small inverter to put in our 5th wheel for a backup in case of power loss. Wanting something small and lite this fit the bill. Just purchased yesterday 10/4/23 so haven't had time to use, just ran it for a couple hours to break in. Filled it with the oil supplied and gas and started it on the first pull. Very quiet, like the gauges & LED lights. All in all, can't beat it for the price and features.