Mine is in a similar location. I occasionally have issues with the GFI on the inverter tripping so I plugged one of these in the other side of the duplex so I can readily see if the circuit is on or off just by glancing in. I also put a remote thermometer in the fridge so I can monitor it while on the road.
https://www.amazon.com/Southwire-Equ...483972&sr=8-10
hope this helps.