Posts Tagged ‘ surveillance system ’

Wireless Security Cameras with Computer Monitor

Monday, May 17th, 2010

Wireless security cameras with computer monitor provide excellent security and surveillance for both businesses and residents alike. A wireless security camera system set up with a computer monitor can provide live real-time monitoring of any area, indoors or outdoors in well lit areas or at night.

Wireless security cameras with a computer monitor can be used just about anywhere. A wireless security camera transmits it video images using either the 2.8 or 5.8 KHz frequencies to a receiver that is tuned to the same channel. The receiver then passes the signal on to the processor or a personal computer.

The advantage of using a wireless security camera is that no cabling is required for transmission of data. This has several beneficial implications. First, installation is much simpler and faster. Second, security cameras can be placed in areas that might otherwise be impractical. Third, security cameras can be located in positions that are relatively remote from the processor, digital video recorder or DVR, or personal computer.

Wireless security cameras can be used with personal computers to complete the security system. If this is the case, a computer monitor is ideal for viewing wireless camera transmissions or for playing back recorded data. In this case, the computer becomes the processor and the DVR but a good quality, high resolution monitor is still needed to view the security camera transmissions in real time.

Contemporary computer monitors are typically Liquid Crystal Display or LCD types with very high resolution capabilities. Security system computer monitors usually provide a variety of connection inputs including composite, S-video, component, and personal computer capabilities. Their response times are normally very fast (for example 16ms) which allows for high quality display of multiple video feeds. Computer monitors for security systems often have an amplifier and speakers built right in to the monitor so that audio may be heard as well.

Of all the components of a security/surveillance camera system, the monitor is probably used the most. The greatest advantage to Closed Circuit Television or CCTV cameras is the ability to view the target area in real time; live. For this reason you should choose your wireless security camera system’s monitor carefully. Be certain that it has a high enough resolution display to be able to display all of your cameras’ feeds simultaneously with good clarity and quality.

There are many uses for wireless security cameras with computer monitor. One very popular application for a wireless security camera with computer monitor is in a nursery or baby’s room. These systems allow you to monitor your baby any time day or night by using spot monitors or a central computer monitor.
Another popular application of a wireless security camera system with computer monitor is for monitoring the entering and exit of customers into and out of various business locations. Wireless cameras can easily be installed in lobbies and vestibules where entrance and exit doors are located. Real-time monitoring of every individual that enters and leaves the premises can be accomplished with relative ease.


How to buy a security camera system

Friday, October 30th, 2009

Deciding on the right security camera system can seem like a difficult task. For every different application there seems to be an endless selection of cameras. From vandal domes to bullets and box cameras and everything in between. Surveillance cameras can sell for anywhere from $50 to $50,000 each. I have seen some explosion proof cameras in the $80,000 area. It seems crazy! When you decide you are going to select and install your surveillance system for your business or home yourself, focus on the infrastructure and the heart of the system and keep the cameras simple and inexpensive at first. I recommend you first focus on the heart of the system and make sure that you select the best quality security digital recorder you can afford. This is where you should spend your money first. Focus on the features that are important to you, but I recommend you consider H.264 compression, real-time recording and high end chipsets. Also make sure the DVR has a good warranty and is able to hold enough hard drives to meet your future storage needs. The DVR will make or break your experience, so if you can, invest in the best quality DVR you can.

Next, choose your cabling wisely. Plug and play packages certainly make installation easier and plug and play BNC cables are fine if you do not think you will want to upgrade your cameras in the future. However, if you may consider high end cameras down the line then you should consider running either Siamese cable which has RG59 and 18/2 in one so that you can run power and video in one run, or use CAT5 with video baluns which allow for power and video on one cable as well, and has the added bonus of offering an infrastructure that will work with IP (network) cameras down the road.

For those who feel they will need help selecting the right camera for each view, consider using inexpensive cameras that often come with security camera packages. Many of these cameras are great for general overviews and some will even be perfect all around cameras like the OD-LX420IR50 which is an inexpensive infra-red vandal dome that can be mounted inside or outside and can see in complete darkness. Once you have mounted the cameras, you can call the tech support hotline and have them help you configure and network the DVR. Then I recommend you ask the technician to take a look at your camera views and have them make recommendations for cameras that might improve your security. In most cases, the overview cameras will be perfect and save you a lot of money, but sometimes, a more detailed image is needed. The technician may recommend a couple of camera upgrades. Since you already installed high quality cable and have a high end DVR, all you need to do is take down the original overview camera and replace it with the upgraded camera. Now you will have an extra overview camera in case one of your others goes down some day. That’s ok, because you will have save thousands of dollars by installing the exact same surveillance system a high dollar security company would have selected for you. Not a bad trade off.