 Wireless Security Camera System Reviews
____________________________________________________________________________
Owning and using an outside security camera makes total sense. A visible surveillance system
will deter a thief 9 times out of 10, and a wireless security camera system is used increasingly
to:
Deter unwanted visitors
Identify who is outside
your house, and in your garden.
Give you peace of mind, and a feeling of
security
There are different Wireless Security Cameras, dependent on what the consumer needs.
The wireless motion activated
camera which works when specific movement is detected. The
wireless night vision security
camera, which as its name suggests ‘sees in the dark’. The
wireless dome
camera, for 360 degree coverage. The wireless covert camera, ideal because it can be virtually invisible. These
four types will be discussed in more detail later.
How does a Wireless security Camera System Work?
Wireless security cameras are essentially closed-circuit
television cameras[CCTV] They work using a video and audio signal, which is
sent to a wireless receiver through a radio band, and not down an
electrical connector. Having said that it must be understood that many wireless security camera systems require at least one cable or wire to be
plugged in to a mains socket for power. The word "wireless" refers to the transmission of video/audio. You
can buy battery powered wireless security cameras with no wires at all.
This article will look at both types.
Advantages of wireless surveillance
Wireless cameras have become very popular because they don’t cost much to install, so they are
cheaper. You don’t need expensive video extension cables, which means there are a lot more places you can
position them, compared to the standard wired security camera.
Types of Wireless Security Cameras
1.
Analog wireless security
camera
Analog wireless means the audio and video signals are transmitted using radio frequencies
with a range of about 90 metres, approximately 300 feet, but this of course
is where there are no obstructions. You need to realise that walls, doors, and furniture will dramatically
reduce the range.
Analog wireless security cameras operate using three frequencies..
The majority operate at 2.4 GHz. Unfortunately that
is the same frequency as household routers, cordless phones, microwaves, and video game controllers use, and so
there may be some interference with the wireless camera system. If the analog system works at 900MHz then there
will be no interference. The 5.8GHz wireless system equally doesn’t interfere with any household
appliances.
Pros and Cons of the Analog Wireless Security Camera System
A. Pros
It is affordable, because the low cost of the wireless camera.
A big benefit is the fact that the signal from one camera can be picked up by more
than one receiver. This means you can see what the camera is picking up from different receivers in different
locations, which gives you better surveillance
B. Cons
They can suffer interference from other household devices, such as microwaves, cordless
phones, video game controllers, and broadband routers.
A big drawback is that they may not be secure if the waveband is the same as used by
neighbours, who might be able to pick up the transmissions.
The quality of video isn’t great, nor is the audio reception, and it can get worse if
the wrong waveband is used.
2. Pros and Cons of Digital Wireless Security Cameras
Digital wireless is the transmission of audio and video analog signals encoded as digital packets over high-bandwidth radio
frequencies.
A. Pros
They are 100% secure, so your neighbours cannot pick up the signal on a radio.
They have a wide transmission range up to 450 feet assuming there is nothing between
camera and receiver.
You get a high quality video and audio, with a two-way communication between the
camera and the receiver.
A big
advantage is that the digital signal means you can transmit commands and functions, such as turning lights on
and off. This of course convinces people the house is occupied
B. Cons
There is only one, and that is the digital wireless security camera system is usually more
expensive than similar analog setup.
____________________________________________________________________________
Related Articles
| 
