How to Select a Wireless Camera, DVR For Home Security

Wireless camera with or without digital video recorder (DVR) forms an integral part of a comprehensive home/office security system. Even if used as stand-alone, the wireless camera presents itself as a serious deterrent to thieves and criminals. Apart from security reasons, the wireless cameras are also used for situation or asset monitoring purposes.

Why Wireless?

During the past few years, wireless cameras have become increasingly popular. Traditionally, wired cameras have been in use (to a very limited extent). This was partly due to the high price of wired cameras, and partly due to the need to lay wires from camera to image/video recorder and/or monitor.

Certainly, the advancement in technology and price cut-down applies to wired cameras as well, but use of inexpensive wireless technology gives an edge to wireless cameras over wired devices because cost of copper wires and running them from point A to B is eliminated. Also, wires are an easy target and can be attacked if visible. Wireless cameras are also easy to install and easy to displace if required, as the cabling overhead is absent.

Ideally, you should have the following components to set up a wireless camera system.

1. Wireless Camera

You should choose a wireless camera that employs CCD technology, constructs image/video in color and provides a resolution of around 500(H)* 500(V) pixels or better. It is very important that the camera should provide night vision. Infra-red LEDs enable the camera to see in the darkness. If the wireless camera is to be mounted outdoors, make sure the camera housing is sufficiently robust and sturdy to withstand sun, rain, strong wind and tempering.

It is desirable to choose a camera with very low lux rating. A low lux rating enables the camera to construct a clear image even in low light conditions.

Alternatively (if possible), use of battery power renders the camera totally portable and completely wire-free.

2. Receiver

Receiver is the component of the system that receives the image or video signals (wirelessly) and converts these signals in a format suitable for monitor (or TV) input. If this unit has the image or video storage facility, then the device is called DVR (digital video recorder). Receiver (or DVR) may have more than one channel.

3. Monitor

The receiver (or DVR) connects to your TV via cables. If it is a simple receiver, you can monitor images or videos in real time only. If you intend to use your computer monitor for viewing purpose, be assured that the receiver or DVR generates signals compatible with PC monitors.

Executive Summary about Wireless Camera by Munawer Azeem

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