DVR - NVR

CCTV or video surveillance are system of cameras and image transmission, arranged in a public or private area to remotely monitor. So this is a type of remote monitoring or video surveillance. The images obtained with this system, can be treated automatically and then archived or viewed or destroyed.
Monitoring is used to control the conditions of safety compliance, safety or performance of a particular procedure. To record and store events you must have a commonly called video recorder called DVR for digital video recorder.. Depending on your cameras you can choose between recorders for Digital cameras, Analog, HD-TVI and AHD or video recorders or NVR for IP cameras megapixel