Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point wireless links. CCTV is often used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores.

A digital video recorder (DVR) or personal video recorder (PVR) is a device that records video in a digital format to a disk drive, USB keydrive, sd memory card or other memory medium within a device. The term includes stand-alone set-top boxes, portable media players (PMP) and recorders (as camcorders that record in memory card) and software for personal computers which enables video capture and playback..

This housing is required for cameras installed indoor and outdoors, as it protects them from the natural wear and tear caused by the elements.Entirely in aluminium, ppc body and waterproof, it means that the camera can be installed in any position, even in completely exposed locations.

This lens calculator displays the angle of view of common CCTV lenses. The calculator is compatible with all the standard CCD sizes, such as 1/4 inch, 1/3inch etc. These are the standard CCD sizes used in CCTV and security applications

Indoor and Outdoor, heavy-duty pan and tilt mount commonly used for mounting cameras and housings that require remote control maneuverability. Features bi-directional auto scan travel (pan) with two adjustable positive stops to reverse direction, and manually adjustable tilt angle.

A CCTV switcher is a unit that changes between camera pictures one at a time, the output being viewed on a monitor or passed to the recording device. As switchers can use any VCR to record in true real-time, the pictures which are captured can be of a very high quality. Many professionals under-rate switchers. The fact that they provide true real-time recording unlike a snapshot from a multiplexer means they provide a superior picture quality. This can sometimes outweigh the disadvantages that switchers can only record one picture at a time.