Some of those alarms are old school.
Check into all the new real time alarms/home surveillance systems that can all be used with your
smart phone for the RV also.
There are numerous ones to choose from and they are now real affordable to the average buyer. Plenty of them out there now also that do not require a monthly fee either. And yes there are apps for that too! Stay away from any of them that say pet monitoring , they cost 4 times more and they are the same as the ones stating for kid and home surveillance.
Something as simple as a cheap nanny cam pointed at a thermometer with maybe a lamp plugged in and on behind it in the RV would work. All viewable thru your smart phone. Those nanny cam kits are dirt cheap now. Even the ones that require a laptop, we all have tablets with us so that would work too for the RV.
If the temps started raising on the thermometer or the light on the lamp was off, you'd know the ac and/or power had shut down to the your coach.
Buy 2 nanny cams and you get to enjoy watching all what your dog does in the MH while your are gone purely for amusement factor! :B
We must be willing to get rid of the life we've planned,
so as to have the life that is waiting for us.