https://boatcommand.com/how/

https://boatcommand.com/shop/

$9/month and they have an annual billed plan that's a savings. I like mine to be active year round because I leave my batteries aboard, and my boat is unlocked in winter storage. I have the motion sensor inside the cabin, covering the companionway. I'd like to know if anybody decides to call it "home".

I called the yard only once last winter when I got a motion alarm. It was the only false alarm I had. I leave it on when I enter the boat as a test, then shut it off. It's reliable. I always get the alarm in seconds.