GE Interlogic Corporation makes a Simon stand alone system, if you get the alarm.com cell monitoring it will work where ever you park it. you need 110 current to get it started, then you can run it off its battery for around 24 to 36 hour at a time. the battery is not a deep cycle battery but you can hardwire a larger better batter battery as long as you pay attention to the voltage requirements. The remotes just double stick to the windows. many options for add on, even a C02 wireless remote.
you would have to talk to a home security person to get one as they are not a over the counter item. wiil post a link to product info when i dig it up