Installed A Camera As A Wi-Fi Audio Device Help Fix Security Camera System – Buyer’s Guide

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Security Camera System – Buyer’s Guide

Although the application of CCTV security has not changed much in recent years, the tools and equipment have been significantly. Cameras became smaller, cheaper and better, but the biggest tool was made in recording equipment.

That is why many customers shopping for complete CCTV surveillance and recording systems are confused by such a truth in available products. The purpose of this article is to guide buyers towards the best possible and most economical CCTV equipment, based on intended application and requirements.

Choose the right camera.

It is virtually impossible to describe all the types available in this short article. We will focus our attention on the most popular and widely used types of cameras instead.

CCTV security cameras produce images using CMOS or CCD (Charge Couple Device) chips. Small and low-cost CCTV cameras usually use CMOS technology, produce poor quality images and have very poor light sensitivity. Decent quality CCTV cameras use CCD technology. The CCD chip size is usually 1/4″, 1/3″ or 1/2″. As a rule, the larger the size, the higher the quality of the image produced and the higher the price. However, higher density 1/4″ and 1/3″ CCD chips can now produce as good images as many 1/3″ or 1/2″ chips.

The number of TV lines in the security camera image is a measure of picture resolution (sharpness). The greater the number of TV lines, the better the resolution and hence, the overall picture quality. Standard resolution cameras can have 350-380 lines, more than 400 TV lines are generally considered good resolution while more than 500 TV lines are considered high resolution. B/W chip cameras produce higher resolution and better light sensitivity, thus suitable for use in dark areas where light conditions are poor most of the time.

On the other hand the color camera offers more realistic and natural photos. CCTV cameras are usually divided into different types based on the body of the camera used.

Professional grade camera.

There are box body types that have the ability to use different types and sizes of lenses. Interchangeable lenses allow this camera to monitor objects from almost any distance. Although for indoor use, they can be used outdoors when combined with waterproof housing. They are considered more flexible and widely used by professionals for commercial installations.

Bullet camera.

Bullet cameras, as the name suggests are contained inside bullet-shaped housings.

Most bullet cameras are waterproof and sealed without the ability to use different lenses. The big advantage of bullet cameras is the small size and integrated design, some bullet cameras will even have infrared LEDs integrated. Infrared technology is simply directed light in the infrared spectrum (not visible to the human eye). This light will illuminate the viewing area, making it possible to monitor in complete darkness. This is great, but it only works up to a certain distance (usually between 10 and 50 feet depending on the model) Simple to install and aesthetically designed, bullet cameras are a great choice for residential and do-it-yourself installations. surveillance. are at about 25ft from the camera location (with standard 3.6mm lens).

Camera Board.

Board cameras are basically fixed lenses mounted on a circuit board. These cameras can be packaged in a small case (Mini Camera) or dome (Mini Dome) or simply sold without packaging, to be installed by the buyer. These lenses are either of a standard industry aperture or a “pinhole” lens of very small aperture. Pinhole lens cameras are often called “spy” cameras and can be mounted in a covert manner for covert surveillance purposes. The most popular examples of hidden boards are smoke detectors and motion detector cameras.

Since the lenses of table cameras are pre-mounted, have a fixed iris and are usually at a short focal length (ie wide angle), their flexibility of usefulness is limited. However, this type of camera can provide a low cost solution in the right situation, particularly in a home environment. We briefly described the most popular types of cameras, let’s now discuss, how and where to use mites.

Professional quality and C/CS mount lens attachments generally offer better performance and many important features, such as lens control output, back light compensation and many more…

The distance from the surveillance object to the camera is not a problem, that is why the ability to choose different lenses, based on location is so important. Installation is a bit complicated and professional installation is strongly recommended. We recommend this type of security camera for commercial installations.

Most bullet cameras in comparison, do not offer high resolution and lens selection flexibility, but they are likely to be waterproof, some will have built-in infrared lights and most of all are relatively easy to implement. They usually come with a 3.6mm lens witch is considered to be suitable for most standard installations (good for covering small to medium sized rooms or equivalent).

For larger rooms or longer distances, cameras with 6mm or higher lenses may be necessary. They are great choices for any do-it-yourself installation.

In contrast, Board cameras are widely used in hidden camera installations, sometimes called Spy Cameras. Many of them are basically boards with built-in transmitters. We will not go into wireless cameras now, as this should be enough material for completely new articles.

Board cameras are sold as plain circuit boards, to be integrated into hidden camera devices. They are also available in dome housing, as varied popular Dome Cameras or integrated with smoke detectors, motion detectors, exit signs and so on. Most also come with 3.6mm lenses although some will allow the lenses to be interchangeable.

During the time, the most practical design was Dome Camera and its aesthetic appearance blends into the environment, especially with drop down seal, great for use in stores, lobbies, gas stations and other public places. Practical solutions for hidden installations as well, Motion and smoke detector cameras, they absolutely do not replace your security alarm or fire protection. They should always be chosen based on the location of the camera (indoor/outdoor), distance from the surveillance object, light conditions and budget.

When shopping for security cameras, customers are faced with the fact that they will need to choose one or another recording device.

The days of the well-known CCTV time-lapse VCR recorders are almost over.

Although some customers still prefer this old recording solution, it is well worth investing some extra money to buy a good quality digital video recorder (DVR). Digital recorders transfer analog camera video feed into digital format, and store it on hard drive. There are two main types of digital recorders on the market today.

PC based system.

A special board and software installed on the computer will allow camera input and video storage on the hard drive.

Many people are under the misconception that personal computers with additional hardware installed, will do the job. This explains the hundreds of companies that hung up a sign, took some ads and started working from basements and garages, holding themselves out to be DVR manufacturers and security specialists. The main problem with this type of CCTV recorder lies in the main component of it… Yes, it is a computer, designed to do unlimited work, but not properly. The truth is that any computer based on digital video recorders is, and will always be vulnerable to software crashes, breakdowns, system instability, problems related to viruses etc…

Stand alone systems.

Very similar in appearance and control functions to standard VCR recorders, it is a truly remarkable device. Most video processing is done by hardware, thus eliminating system crashes, video is also stored on the hard drive in digital format. The basic operating system, usually Linux, is stored forever on special processors, it is impossible to replace or corrupt. Designed and manufactured with one application in mind, it is far superior in performance and reliability to its PC-based rivals.

Some DVR systems will even have remote monitoring capabilities, useful when monitoring is required in different locations via the Internet or network. The most important areas to look for when choosing the right DVR recorder are motion detection and frame rate. The higher the frame rate, the better the video recording. Motion detection will only allow video recording from each camera when motion is detected; This is great for extending video recording time.

Security monitor.

Video from the Security archive could be displayed on regular TV monitors. It is OK to do it this way, for baby monitoring or residential applications, when the quality of the picture is not that important. However for professional installations, security monitors are just as important as cameras. They offer extended photo tube life (necessary with any static photography, which can cause photo burn) and high resolution rap.

Cables and wires.

Finally any camera installation will require proper wiring. Good quality cable will prevent video degradation over long distance runs. It is recommended to use RG59 or RG6 coaxial cables as it is fully coated and will prevent video loss up to 400 feet. In short plug and play non-coaxial cable runs with factory installed BNC connectors can be used (up to 150 feet). Plug and play cables are easy to install by inexperienced users.

Cable for CCTV cameras consists of two cables bundled in one jacket. One cable for video and one for power delivery.

Conclusion.

Every CCTV system is as good and reliable as its weakest component. With this in mind, investing on better quality and performance cameras, while buying low performance recorders, from an economic and practical standpoint just doesn’t make sense.

For example, why use CCTV cameras with 500 lines of TV resolution and monitors that only offer 380 or less. All the benefits of high-resolution cameras are affectively sacrificed by the limited capabilities of the monitor. Ask important questions before purchasing a video security system, and your dealer will probably be able to provide more details and recommend equipment for specific needs and requirements.

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