A4 camera security system could be one of the most convenient ways to watch a small house, office, store, or another type of property. Four cameras give an opportunity to control important places like entrances, parking lots, corridors, or maintenance zones without having to install a big system. In the process of selecting the system, it would be necessary to take into account such criteria as camera resolution, night vision, storage possibilities, and remote viewing. The correct positioning of each camera is also important to avoid blind spots.