Great, I'm working on a similar project but for a Caravan. I've built an Arduino auto dialler that has e. g. 9 sensors. Each sensor can call any number of people including SMS, Actual Text to speech voice call and Email. The problem with Caravans in storage is that the battery wouldn't last long, so I'm using a timer board that can be tripped into action from 'No' power to full power for everything else attached to it. e. g. Router, 4 Cameras, Alexa etc. It then stays on for 20 mins or for as long as the sensors keep tripping. Anyone tries to break in, the power is turned on to the system, the system phones the whole family, the whole family dial straight in to the cameras to see what's happening. The Arduino also has a GPS board so it will also relay its exact position every few minutes. Is this the sort of thing you are creating too?