02-18-2018, 03:12 AM
You are right the listing is really short on details, there are many more products available on eBay with better descriptions (usually in broken English) but they generally involve a cabled sensor that gets clamped onto the electrical supply that "dials down" the inverter output if it's greater than what the house is consuming.
My biggest concern (after hooking up unlabeled Chinese electronics to the power grid, of course) is that lets say the unit works splendidly- a small solar array lowers my utility bill $10-$20 a month. I need to run a unit for ~20 months to get a pay back on it and it has a 12 month warranty. With my luck the unit would break before it paid for itself.
My biggest concern (after hooking up unlabeled Chinese electronics to the power grid, of course) is that lets say the unit works splendidly- a small solar array lowers my utility bill $10-$20 a month. I need to run a unit for ~20 months to get a pay back on it and it has a 12 month warranty. With my luck the unit would break before it paid for itself.