We use a variety of IP Cams / wired cams that we can receive a motion warning and are viewable over smart devices. Types styles, configurations are infinite somewhat limited by your type of data plans / router configuration(s).
We don't wilderness camp, and tend to only stay in CGs that pass our "gut feelings".
I'd expect a Rottweiler chained to the steps model would work well.
Best of luck
J & J, DRV Suites ES-38RSSA #9679
GM Denali, 3500HD-Max, 4x CC, 8' DRW,
EZGo-TXT, Clubcar Precedent