Our CCTV systems not only allow you to record any activity on your property, 24 hours a day in high definition, but also remotely view the footage from your smartphone. CCTV works as a great deterrent against potential intruders, but with crystal clear imagery, you can be sure that anyone who does trespass on your property will be clearly identified.
Cameras record automatically when they detect movement and even send you an email notification if there is any activity.
DS Security Systems understand that everybody is different, so that's why our systems are designed to suit your individual needs. We can install a new system as well as enhance or maintain your existing set up.
The ability to film in low light conditions or even complete darkness is essential for many CCTV applications. Part of that ability is down to using the right electronics, which are sensitive enough to work in low light, the other tool used is infra-red or IR lighting.
Infra-red light isn't visible to the human eye, but CCTV cameras switch to black and white as light levels fall and can film the IR light spectrum. This means that to the camera it’s like shining a torch. IR must bounce off something, but providing there is a hard surface to reflect the infra-red, your camera is able to see in the dark. Previously cameras had separate infra-red-light lamps bolted onto the side of their housings, which made the whole unit very large and industrial looking. In more recent times cameras have been designed with IR lighting built into them. This greatly reduces their overall size and visual impact. It also reduces cost when compared to modular cameras using separate lighting units.
Many people selling CCTV cameras describe them in terms of infra-red range. Do not confuse this with the optical range of the camera or the distance at which a camera can record detail. That is determined by the lens. Wider angle lenses will have a shorter optical range, whereas telephoto lenses have a longer range. The IR range is a largely immaterial figure, often made up and is supposed to represent the distance at which the camera's infra-red can be detected. In reality, the ability of a camera is a combination of the lens, how powerful the IR is and how sensitive the electronics are.
Something you might see mentioned is an IR cut filter. This is a mechanical filter which moves in front of the camera lens during the daytime. The filter is designed to improve colour rendition during daylight filming. Electronic adjustments can also be made to the camera to improve colour representation.
Motion detected recording is a feature on all our Digital Video Recorders (DVR). The DVR monitors camera images and decides when it thinks there is movement. To do this the DVR looks at individual image frames and compares them to the previous one. If it sees differences, then motion is assumed to have taken place. It is the DVR not the cameras which is looking for movement.
A DVR isn't as intelligent as you or I and can't differentiate between background movement, changes in light and someone coming to break into your property. To help minimise false triggers, it is possible to limit where on the screen the DVR looks for movement and limit this to a small area or a number of areas. You don't have to use the full screen. You can set the trigger area using the set-up menu on the DVR, alternatively this can be achieved remotely if the DVR is connected to your local network/the internet.
Some people only record footage when motion is detected, in an attempt to extend the time footage is stored. We are not big fans of doing this. We would rather see motion triggering being used to create bookmarks within a 24/7 recording rather than the sole means of capturing footage. Use it to identify which sections might be important but still have constant footage either side of the trigger. Systems which use motion triggering as the sole method of recording are usually trying to compensate for too little memory. We recommend allowing 250GB of hard drive space per camera on SD systems, 500GB per camera on HD systems.
IP CCTV may also be called HD digital CCTV, and the terms are often used interchangeably. IP CCTV uses high resolution cameras, networked using computerised technology. IP CCTV utilises network video recording to store images on high capacity computer-based systems which offer better flexibility, reliability and performance over Digital Video Recorders (DVRs).
IP CCTV is the latest technology and offers a feature-rich and comprehensive set of tools. These ‘tools’ include a range of image and data software processing techniques that offer superior viewing, identification and analysis.
Centralised computerised systems and servers or Network Video Recorders (NVR’s) provide outstanding performance and support COI/DPA compliance and corporate governance. Greater imaging power through higher resolution technology cameras means IP CCTV captures so much more information than previous generations of CCTV technology. This provides better quality playback and the ability to zoom in on long distance footage while maintaining image fidelity.
Key capabilities include facial recognition of individuals, predicting the likely actions of individuals and video analytics for monitoring and reporting property boundary intrusion events.
CCTV image quality is closely related to lighting conditions; consequently, lighting is a major consideration of any installation. Despite the option of IR (Infra-Red) cameras that ‘see in the dark’, they only have a limited range and their operational effectiveness is restricted. To ensure the best performance of CCTV and the capture of high quality images, lighting conditions need to be optimised.
Lighting only needs to be on permanently if it acts as a deterrent in itself. Energy efficient LED lighting significantly reduces the cost of permanently illuminating dark areas. External lighting needs to avoid creating a nuisance to neighbouring properties. As an alternative to permanently lighting a CCTV monitored area, lights can be controlled by movement sensors. However, such a control system needs to respond quickly to catch fast action.
As a result of its ability to identify individuals, CCTV images and operations are governed by DPA compliance. Those occupying specified roles in managing systems and data, such as data controllers, are legally responsible for ensuring privacy and preventing operational misuse. There is also a formal requirement to maintain specified documentation and this varies with the size of the organisation or business and the type of systems in place.
This would depend on the system itself, but we would be able to advise you on this. Call us on 01206 585 180 to discuss further.