This adapter falls into the "puck" category, as opposed to the "dogbone" category which has the Male end, a short cable (less than a foot) then the Female end. Adapters heat up where they plug into the supply socket nad where the RV plugs into the adapter's socket. Advantage to dogbone is that heat has two places to dissipate. In a puck, that heat is all concentrated in one place.
For that reason, I'd rate this HD/Amazon puck adapter as Light Duty. Don't expect it to carry much more than Converter/Charger for Lights, Refrigerator Logic Board and maybe its heater element. Try running A/C or electric heaters and I think you'll overheat it in short order.
Not saying don't do it. Just understand its limitations.There's a recent thread about all this. Started out as trying to get as much amps into a 50A coach as a couple 20A outlets could provide, as I recall. Then it went on into the advantages of dogbone adapters over pucks. I think it also touched on GFCI.
That said, not sure it'll work for you if the circuit you plug it into happens to be GFCI. Electrical gurus here can help with that.