PP Electrical Services install CCTV installation Telford, Shrewsbury and surrounding areas for Industrial, Commercial, Large domestic customers who may have suffered a burglary, damage, theft or unauthorized access into a property.
CCTV camera technology has evolved over recent years and it now offers better picture quality, with the latest HD quality CCTV offering users the ability to better identify would be intruders, this can be invaluable in providing evidence to the Police and bringing intruders or vandals to justice,
CCTV cameras can be used for many purposes not just within the security industry. We have installed systems that monitor equipment in factories and also identify when staff are on and off site e.g lone working etc they also provide a very good visual deterrent.
Systems are economical and allow footage to be stored for up to thirty days on a digital hard drive for viewing on a PC, laptop, or mobile device remotely if necessary.
PP Electrical can help you protect your business, property and equipment so to help with some of the associated jargon we have listed a few of the current technologies below to help explain.
There are a wide range of cameras available all offering different technologies and functions. Our designer will ensure that each camera is specifically suited to your requirements and the environment in which they are installed.
These are the more 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 >600TVL.
This type of camera is connected via Cat5 cable to an Ethernet port on the network infrastructure or directly to the Networkable Video Recorder (NVR). They are rapidly increasing in popularity with the increase of network bandwidth availability 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 but beware they may also slow your network down with many IT managers requiring a separate Network for the camera installation.
Bullet cameras are the latest incarnation of the old full body or box camera. They come in many different configurations as well as offering IR (infrared illumination quite often as standard. Bullet cameras are less discreet and usually more visible, providing a more effective deterrent against crime.
Dome cameras have become popular as they are more aesthetically pleasing than the old Box type cameras, they offer an amount of vandal resistance and can be specified with a wide range of lenses and IR (infrared illumination). These cameras can be used both indoor and for outdoor applications.
PTZ (Pan Tilt Zoom) cameras have the ability to be controlled remotely via telemetry controllers; either a joystick or through PC software. When they are not manually being controlled, they can carry out a ‘tour’ following a pre-programmed sequence. PTZ Cameras can also be integrated into Alarm or Access Control Systems, allowing the camera to focus in on a ‘pre-set’ position, i.e. if a door is opened or a detection device is triggered.
During recent years CCTV camera technology has evolved from black and white (monochrome) and colour cameras to a wider range of varying technologies:
Day/Night (D/N) cameras are usually installed in external environments where lighting levels can vary. D/N cameras usually transmit colour images, however, when the light levels drop below a certain lux monochrome is more effective. D/N cameras switch between colour and monochrome depending on the level of light ensuring optimum image quality.
Infrared (IR) cameras can operate under zero lux conditions. They usually use D/N technology and have built-in IR lamps. They are particularly useful when no lighting is present within or around a building.
Digital Video Recorders (DVR) and Network Video Recorders (NVR)
DVR’s are used to process analogue cameras whereas NVR’s are used to process IP cameras.
The Recorder is usually the heart of the CCTV system. It is able to process and store images obtained from the cameras which are connected to it.
DVR’s and NVR’s offer continuous recording to their internal hard drive, usually retaining footage for an excess of 30 days. The storage capacity is usually anywhere between 500 GB (Gigabytes) & 12 TB (Terabytes).
DVR’s and NVR’s can usually accommodate between 4 and 16 cameras, however, multiple recorders can be used for larger applications allowing a single CCTV system to accommodate hundreds or even thousands of cameras.
DVRs or NVRs can also use a keyboard allowing easy control of the system.
Working with homes and businesses across the Telford & Shrewsbury area, we have many years of experience of CCTV installation, monitoring and maintenance.
If you require any more information or a quote please contact us: