The 2 camera security systems on this page include (2) 1080p HD CCTV cameras, 4 channel CCTV DVR (up-gradable to 8 and 16 channel), pre-made Siamese cables, and camera power supplies. Customers can add-on an optional flat screen monitor. The monitor is optional because these DVRs have a VGA and HDMI video output that can be used with any common computer monitor or television with those types of inputs. Other optional system upgrades are spools of RG59 Siamese cable instead of premade Siamese cables and multi-port power supply boxes instead of individual power supplies for the CCTV cameras. These systems include our best selling hybrid CCTV / HD CCTV DVRs. They have been a favorite among our customers over the last 5 years because of the easy to use interface, Windows and Mac remote access support, and outstanding free mobile apps for iOS and Android mobile and tablet devices. We offer 2 camera systems so that customers can get started with securing their home or business and add additional cameras when needed. The systems on this page include some of our best selling HD security cameras, however, we can mix and match any combination of cameras in any quantity to build a custom surveillance system for your exact needs.