We live in South Louisiana and have worried about "the kids" when we go somewhere or just hang out at a neighbors campsite. If the AC were to go off in the summer, the temp could be deadly to them in minutes. We purchased
https://www.sensoredlife.com/#/ . A MarCELL uses the cellular network (Verizon in the US). You set your high temp alarm level, low temp level, and I think humidity. You can also add flood sensors ( don't seem to need them for the 5th wheel). When power goes out, or returns, or any of the alarms activate, you almost immediately (seconds) get a notification. I use text and it's quick. There is also an app you can put on your smartphone that allows you to check whenever you want (pay in advance for that), or it will allow you to see about every 6 hours for free. Been using it for about 2 years. The camper is in inside storage about a mile from the house. It doesn't freeze often here, but it can. We don't winterize. I put a small electric heater inside and when the temp gets low enough, the heater will kick on, but if the power goes out, I have to go by and reset the heater. Oh, there is an internal battery in the MarCELL that allows it to monitor and send messages after a power failure.
When we camp, we can go into town, now, do some sightseeing, and not worry so much about "the kids". I lower the alarm level, before we leave and if the temp gets over 80, I get alerted. Gives us time to get back and get them out and resolve the issue.
Linear Mode
