hello
Idea suggestion, for moving RV with no adresse👍
we Will get a RV trailer and 
why not make security système for RV 
That se can Receiver texto on are Smartphone if somebody try to break IN 
.
There no phone on a trailer or motorhome
How to Do 
sometime old technologie is cheaper and Do the job
Before let me talk about project that a Friend and me have start in 1997 call TVC 2000 
TVC : Télé Véhicule Control
TVC: was a project for cars : to Start, unlock lock, Doors and Cut the motor if car is stolen.
we we’re able to send by phone a numeric message to are devise and sélect the option we want.
the car can ne in. China and you un USA and open the the or do other options, by a simple call with a combinaison of number.
in 2000 that was incredible , we did not commercial the devise, we have sold Just a fews to friends:rofl:, There where no Kickstarter 
at that time 
.
let Tall about that ils technologie that can help you creat that devise for RV.
what we use with the TVC was a pager from Motorola call CreataLink. with that devise install in the car we where able to send date to are TVC
we we’re using one pager line$4.99/month and can use that Line for thouand or cars.
how it work
when want to Start a Mycar Just have to call the pager Line:
Call the pager Line :
1-enter IDCAR 6 digits (123456) unique
2- PASSWORD 3 digits (123)
3- enter the option 1 digit ( 1 Start car, 2 lock, 3 unlock)
4- en the call
how process🤔
when you call the pager, every car on this line, ex 10000 cars, Receiver the first data the 6 digits IDCAR, but only one car Will Receiver the other data,
9999 cars not refuse the data because There IDCAR is wrong💡
the one car that the IDCAR Will process to the option sélect😉
i think with a pager you can Do a security système for RV
in 1997 we have done all the Design, Built, peogrammation of are TVC Device.
need more info
your Welcome
Regards !
Christian