CCTV is the use of security cameras to transmit video to a recording unit, usually connected to a monitor for viewing. Security cameras can be used for your home or business as a general deterrent for intruders, to reduce crime, as surveillance for health and safety issues or to provide accepted evidence in the case of litigation. The most common systems used to be analogue systems, however the most popular systems are now high definition IP systems. Cameras on this system can be set to record continuously, or only on detection of motion.
Recordings are stored on an internal hard disk drive on the Digital Video Recorder (DVR), or Network Video Recorder (NVR on IP Systems). You can then search back and access footage with a few clicks of a computer mouse, identify important events and save them onto DVD’s or USB drives (memory sticks). More advanced CCTV systems can work alongside motion sensors to detect intruders, alert a remote monitoring station and contact keyholders and the Gardai. All systems now provide the facility to “dial into” from a computer or your phone.