I'm new to the surveillance camera world. I have a lot of learning to do about camera abilities, options and setting plus IP NVRs before I start buying and putting my system together. That's why I joined this forum and doing a lot of reading. I know what I want the system to do and what I want to cover. I have a 2 story home in a residential neighborhood. So far I'm thinking using about 10 4K motorized focal Turrets like the IPC-HDW5830R-Z to mount on my upper eves, approx 18 to 20' up to get good daytime hi rez overall wide coverage of the property on all sides. Then using about 8, 2MP motorized starlight Turrets like the IPC-HDW5231R-Z on my 1st floor eves, approx 7 to 8' up, to cover my driveway, front porch and door, side gate, and back sliding glass doors. Then either 2, SD49225T-HN or SD49225T PTZ. 1 on the front corner 2 floor eve and one on the back corner. Then looking at the 24 channel 4k NVR. Dahua model number N54A4P but the model number Empire city, Andy's website is NVR5424-24P-4KS2 . They seem to be the same just different model numbers.