Sounds interesting because you can query your RV at anytime to see what the real time conditions are. The ones I have seen on the market will text you when the temp goes out of preset conditions or if power is lost. The MarCELL Cellular Connected Monitoring System does that and goes for ~$250 plus a ~$10 per month subscription for the cell service. If yours is in that price range or better yet cheaper count me in as interested!
Here is a link to the MarCELL unit:
The MarCELL Cellular Connected Monitoring System
2016 Windjammer 3006WK
2010 Dodge Ram 2500, 4x4, Diesel, Front Hitch, Air Lift 5000 Rear Air Bags, (not really used, left over from our truck camper). Equalizer E4 1.4k/14k WD Hitch. TST 507 TPMS. Furrion FOS48TA Observation Camera. Garmin RV-760 GPS. Honda 2000i Genny, PI EMS-PT30C.