How to match the monitoring cameras in residential quarters, how far they are set and their setting principles

Personally, I suggest installing zoom cameras at both ends of the fence and roads in the park to ensure that there are no dead ends in the area where people flow, and installing some high-end zoom cameras (high-definition and telephoto, because the environment may be complicated) on the road or fence near the commercial street. Install some big ball machines at an appropriate height on the ground to monitor green spaces or other open spaces. If you have the ability, buy some telephoto (1000mm) ball machines and install them on the 32nd floor. Hehe ... in this way, the whole community can see them ... The underground garage can be equipped with some low-end ball machines (with infrared). As for the monitoring of elevators and stairs, you can also use a low-end fixed-focus hemisphere machine.