I have a Night Owl multiple camera security system both at home and at daycare.
At daycare I have 16 cameras. Some inside, some outside. All record and all are viewable via my smart phone when I am away but otherwise just display on a 32" monitor from inside. I can see all of the rooms in my daycare house as well as all around the outside.
At home we have the same set up but not as many cameras inside the house. We also have a Ring security light that we use but it's not as simple to set up as they say it is....of course, it's more than likely a person issue as we had to buy a wi-fi extended and spend an enormous amount of time figuring it all out...but it is nice and is something I would definitely recommend to others for outdoor use.
We started with a big system but only a few cameras and then added more as we could afford them. We have
wireless cameras inside and
wired cameras outside.
The entire system was literally plug and play.
SUPER easy.
https://nightowlsp.com/products.html