Thanks to advances in the technology used to manufacture them, wireless security cameras have come down considerably in price over the past few years. In addition, wireless technology has provided for easier and less costly installation. Wireless security cameras still cost more than their wired counterparts, but this difference in price can be easily overcome by savings in the cost of expensive video cable and its installation.
Most of today's wireless security cameras operate in the 2.4GHz frequency range. These new high-frequency cameras transmit a clear signal which can pass through walls, ceilings and doors. This is the same frequency that is used by many cordless telephones and other devices such as wireless networks, so this needs to be considered when choosing wireless cameras for your location. In most cases, interference problems can be overcome by selecting different channels within the 2.4GHz band for your different wireless devices.
Installation of a wireless security camera is relatively easy. First, the device must be mounted in the area you want to keep an eye on. Then power must be run to the device, usually 12VDC for most cameras. At this point, the output of the wireless receiver (one for each camera) must be plugged into the display and/or recording device used to capture the images. Advances in technology have also made possible relatively inexpensive DVRs (Digital Video Recorders) and display monitors.
In most cases, you will want to record the output of the wireless security cameras. Display only will suffice if you have someone on guard who can keep an eye on the displays, but recording the images maintains a record of any activity of interest. Devices, called quads, are available which allow multiple cameras to be viewed on one display monitor. Most DVRs also include built-in quad capability.
A DVR can record the output of multiple wireless security cameras. Since the images are recorded on digital media, there are no tapes to wear out, and you can instantly view any portion of a video without having to fast-forward or rewind to the correct spot on a tape. Standalone DVRs are available at reasonable cost. Some are PC based, using the hard drive of the PC to store images and the monitor to display the images in real time. You can also buy a package which contains all of the necessary software and hardware to turn your existing PC into a sophisticated DVR and display device.
Wireless security cameras can greatly enhance the security of your home or business. It may be that you have thought about installing a wireless security camera system, but haven't because you thought it would be too difficult or expensive. Now would be a good time to find out more about wireless security cameras.
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