Well this is the brackets for the cameras, but I have the cameras and love them. You can set them to alert you if there’s any activity and record it. I use it for my dogs, it however is not like a monitor, you’ll have the app open all day if you use it like that..
Yes, I have one in my lanai (covered porch) and it works well. Keep in mind the device will be exposed to intruders so you need to place high enough to not be reached or in an inconspicuous location. I used a decorative patio bird cage, secured it to the wall and covered the camera light.