Security Cameras
CCTV Systems
Safety Viewer offers CCTV security cameras ranging from multi-camera, all-weather options to covert video surveillance devices. No matter what you need, there's a solution available for you.
What is CCTV?
CCTV is an acronym for Closed Circuit Television. Closed circuit means an installation of directly connected components creating a circuit which cannot be viewed by anybody outside of the circuit. This is different from a television broadcast system which can be viewed by anyone with an aerial antenna or other reception equipment. CCTV systems are typically customized to suit the nature of the premises and the security needs of the customer.
The ideal CCTV system should provide excellent quality pictures in both daylight and darkness, be easy and flexible to use, and provide high-quality images for recording evidence or to help analyze an event.
How Does CCTV Work?
There are many different types of CCTV systems available—analog and digital, wired and wireless—and their modes of operation vary. However, the basic components are essentially the same: a CCTV camera, a CCTV camera lens, a CCTV monitor, and (for wired systems) cables that carry the signal from one place to another.
The images collected are sent to a CCTV monitor and recorded as digital information via a DVR (Digital Video Recorder) or NVR (Network Video Recorder). The CCTV camera lens will determine how far and how much detail the CCTV camera can see.
The CCTV camera picks up the signal from the area being monitored, and in a wired system, the CCTV camera sends the signals through a cable to the CCTV monitor or recorder; in wireless systems, no cable is needed, instead the CCTV camera broadcasts the signal. Monitors can be watched by CCTV controllers or left unmonitored.
Recent advances in technology and software mean many recorders are now equipped with advanced features such as Motion Recording and Event Notification. When set to motion recording, devices will only begin recording when the CCTV camera detects motion. This saves storage space because the device is not recording during periods of inactivity. Event Notification is the process of sending a text message or email when motion is detected.
This is particularly useful for unmanned systems. The recorded information can be stored and/or reviewed by those who have access to the recordings at their convenience. Many of the latest recorders also have network connections so that saved and live footage can be accessed remotely via a PC or smartphone over the internet.
A Multi-Camera CCTV System
Most systems today are comprised of more than one camera, but you don’t need a monitor and recorder for each camera; several cameras can share one monitor and hard drive recorder. Equipment is available that will split the monitor into separate screens displaying multiple cameras, or a sequence unit can be used which allows you to choose which camera you would like to view.
The most common way of controlling multiple cameras is via a multiplexer or a modern NVR/DVR. These units have the ability to individually code mark each image from each camera, allowing all of the cameras on a system to be recorded onto one hard drive unit. The unit then uses these code marks to play back the recorded picture from the camera that you wish to view.
Who Needs a CCTV Surveillance System?
CCTV systems can be found virtually everywhere these days. You have likely seen CCTV surveillance systems operating in shopping centers, retail shops, sports centers, gas stations, on roads, and public transport – the list is virtually endless. And CCTV is becoming increasingly more common in domestic situations. CCTV systems are no longer considered an expensive luxury item, especially when you consider the increased level of security they provide.
In the commercial sector, they can be used for Health and Safety purposes, so that members of the general public can prove that an incident happened or, on the other hand, for employees to fight against fraudulent claims. It also provides security and crime prevention. These days, a CCTV system can be designed to fit any scenario you care to imagine, using options from the vast range of equipment available from manufacturers worldwide.
For example, cameras can be internal or external, highly visible or covert. They can be static or fully controllable/movable from a remote location. You can have one camera or hundreds; you can record for one day or weeks. With a suitable internet connection, you can even view your property when you are abroad.
Why Should I Buy A Quality CCTV System?
In over 70% of all cases, CCTV footage is found to be inadmissible as evidence in a Court of Law because the quality of the evidence is considered inadequate. This can result from the poor design and bad installation of the system and highlights the importance of seeking professional advice from the outset.