This is the latest from Swann to compliment their 7200 Series HD CCTV Systems. 3 Megapixel resolution making the image even crisper and the flexibility of an adjustable lens allows you to set the angle of view to the required width. These cameras will also work on other ONVIF compatible NVR's and will also work standalone on a network. Power Over Ethernet also known as PoE allows you to power the camera directly from the Swann 7200/7250 NVR or from a PoE switch. Super Fast installation, simply remove the dome using 3 screws and with 2 controls adjust the zoom and focus, replace top dome cover and you are done.