CCTV cameras are more forgiving, try put one in a car and it will probably be a lousy dashcam.
I have seen some cameras with battery in them and wifi, so i figure when camping you could set one up as a perimeter alert.
But that on its own will also take a lot of power for the camera and phone or tablet having to be on all the time to sound alerts, not so much of a issue here as aside for a few roaming wolves then the biggest "nasties" here are the ones we vote for.
Personally i prefer my own low explosive perimeter alert, and it don't run out of power, but it do render itself inert after a while as rubber bands are a part of it, and those and sunshine are not a good combination.
And i have a "Donk" in my alter ego.