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CCTV, CCTV Security

The growth in use of Closed Circuit Television (CCTV) for video surveillance as a deterrent against criminal activity continues at a staggering rate, with businesses becoming aware of the vital role CCTV plays in the protection of property and stock, as well as staff and public safety.
The main objective of a CCTV system is to provide visual evidence of criminal activity. However, CCTV systems also have other uses such as research analysis of customer trends, indicating arrival of visitors or presence of customers, and most importantly, staff protection.
CCTV systems are typically comprised of cameras, Digital Video Recorders (DVR's) and monitors. They can range in size and complexity;
Analogue Cameras are the conventional cameras used in many CCTV installations, where each camera is wired directly back to the DVR (Digital Video Recorder) using coaxial video cable. Analogue cameras are usually cheaper than IP cameras and are widely used in small to medium CCTV installations. The resolution of analogue cameras defines the quality of the image, and is measured in TV Lines (TVL); where a typical medium resolution camera will be 480TVL and a high resolution camera will be >530TVL.
IP cameras are connected via Cat5 cable to an Ethernet port on the network infrastructure or directly to the DVR. They are rapidly increasing in popularity with the increase of network bandwidth availability and technology. They are more commonly used on larger installations or sites with multiple buildings. A major benefit from using the Ethernet network to carry video signals, is the saving on cable and associated cabling costs.
Digital Video Recorders (DVR's) have replaced the use of old technology of VCR's, eliminating the need for changing tapes on a daily basis and allowing functions such as viewing from your PC.
The DVR is usually the heart of the CCTV System. It processes and stores images obtained from the cameras which are connected directly to it. The DVR provides inputs for cameras and outputs for monitors and PC integration.
DVR's offer continuous recording to their internal hard drive, usually retaining footage for in excess of 30 days. The storage capacity is usually anywhere between 250 GB (Gigabytes) & 1.5 TB (Terabytes).
The DVR is able to process information such as movement or motion within the images, which increases the amount of recorded frames per second when motion is detected on the image. Configuring the DVR in this way is vital for optimising storage capacity.
DVR's can usually accommodate between 4 and 16 cameras (channels). Multiple DVR systems can be used for larger applications. It is important when installing a CCTV system to take future expansion into account and ensure you choose the right DVR to accommodate current cameras plus any extra cameras that might be required at a later date.
Covert Cameras are often referred to as 'hidden cameras' or 'pinhole cameras'.
Many businesses that are aware of cash going missing often have a suspect member of staff, but are having difficulties obtaining evidence to prove it. Covert Camera Systems can provide video evidence of theft which can be used for interrogation, often resulting in an admission from the fraudulent staff member, which gives the employer the power to take further action.
Eastek Ltd can design, install & maintain CCTV systems and we are dedicated to finding the right solution to suit your needs and your budget.