Home | Computer | Networks | Wireless Networks
Due to reduction in costs, setting up a wireless security system is now more affordable for a lot of folks. This surge in interest is due to many reasons. Some install wireless security cameras because it's now so easy to set up. Others just love the fact that you do not have to drill holes all over the place since it's now a wireless approach. It does not matter why but the fact remains that a wireless system is very much preferred by a lot of homeowners. Wireless security cameras are so popular because users can literally put them almost everywhere they feel that protection is needed -- and the homeowner doesn't have to worry about wires. The placement of a wireless security system is very flexible and easy to install, as long as the installer does his or her homework. Remember that wireless systems tend to fail if you do not follow basic precautions during the install. What sort of failure? Say you install the camera and give it power, but there is no signal picking up on the receiver side. Luckily, this problem can be solved with some due diligence. And when you are thinking about installing wireless security cameras (whether on your own or with some assistance), there are three frequencies that are on the market for the general public. Choosing a Security System: 900MHz, 2.4GHz and 5.8GHz Remember that the lower the frequency, the more walls your system can get through * For devices that are rated 900MHz, they are the best option if you need to get past dry walls to reach the receiver. At the same time, this bandwidth will have minimal issues with other devices, which means that the signal can be transmitted strongly. The drawback is that right now there are only two channels available on this frequency, making its use very limited. * 2.4GHz wireless security cameras are the most common on the market. Unfortunately, there are tons of other devices out there (i.e. phones, computer routers, wireless keyboards) that use the same frequency. That means all these devices are competing for the same bandwidth. As a result, a lot of the wireless 2.4GHz security cameras stop working. There are up to 12 channels available on 2.4GHz frequency that you can select for transmission, but unfortunately, it's hard to find one channel that is not already being used, especially if you live in a big city. To fix this issue, some manufacturers have started using 5.8GHz transmitters and receivers in their wireless security cameras. The 5.8GHz frequency is relatively clean, and subsequently, the successful wireless camera installation rate is higher. You can have up to eight analog wireless security cameras on 5.8GHz frequency. The main disadvantage is that it cannot go through walls with the same efficiency as the 900MHz or 2.4GHz systems. So right now, we have 900MHz, where you can only have two cameras on it (not very practical), and 2.4GHz, which has almost every device known to man on it, and 5.8GHz, which is relatively clean, but fails when you try to send the signal through walls. To get around these problems, the 5.8GHz systems are now being improved with better antennas and more powerful transmitters. That means these 5.8GHz systems can now go through walls as effectively as the lower bandwidth systems, without the device limitations. If you find a 5.8GHz camera and receiver on the market for under $200, chances are it has a 10 milliwatt transmitter in it, which is the lowest power transmitter on the market. If you have a clear line of sight, it can be extended to 300 feet but is really hard to do The signal strength is reduced by interference and walls. If you are looking for a camera that can transmit video up to 500 feet away, you need a camera with at least a 100mw transmitter. If your objective is over 1,000 feet, look for a system with a one watt transmitter. These are very general numbers and can change based on the distance, weather, and availability of a clear line of sight. One way to increase your odds for success is to put both the receivers and transmitters as high as you can to get that clear line of sight. Before making any purchases however, make sure that you identify your own specific needs for a security system so that you get the appropriate protection for your home or business. And if you still are not comfortable choosing the right system for your needs, just consult a professional!
Article Source: http://www.largedirectory.info
Mario is a retiree who is now into IM, promoting a really varied collection of sites, from toilet bowl cleaners to discounted baby halloween costumes , so come check out his sites.
Please Rate this Article
5 out of 54 out of 53 out of 52 out of 51 out of 5
Not yet Rated
