Home
and business security has moved a step ahead in terms of surveillance cameras.
Wireless security cameras are CCTV (closed-circuit television) cameras that
send audio and video signal to a wireless receiver mostly through a radio band.
The cameras require at least one cable for power, thus the term “wireless”
refers to the transmission of audio or video data. However, some cameras are
battery powered making them totally wireless. In this article, the author will
focus on the types and applications of wireless security cameras.
Wireless
security cameras are becoming very popular among modern security customers due
to their low costs in installation (there is no high demand for running video
extension cables) and flexible mounting options. There are two different types
of wireless security cameras: Digital wireless cameras and analog wireless.
Analog Wireless
Analog
wireless is the transmission of video and audio signals using radio
frequencies. Normally, an analog wireless transmits data around the range of 91
meters in open spaces. Doors, furniture, and walls will reduce this range.
Analog wireless is found in three frequencies but a majority of wireless
security cameras operate on 2.4 GHz frequency. Household routers, video game
controllers, microwaves, and cordless phones operate on this same frequency.
This may bring interference with your wireless security camera.
There
are several advantages that come
with analog wireless.
- It is cost effective since the cost of an individual camera is low.
- A signal from a camera has multiple receivers. The signal from one camera can be received by any receiver. You can place several receivers in various locations so as to generate a wireless surveillance network.
- Here are some of the disadvantages:
- It has no strength indicator. There is no any visual alert indicating the signal strength.
- One-way communication. The receiver will receive data from the camera but the receiver cannot send the signals back to the camera.
- Interference from household devices such as video game controller, microwave, and cordless phones.
Digital Wireless Cameras
Everything
nowadays is going digital including the cameras. Digital wireless is the
transmission of video and audio analog signals encoded as digital packs over
high bandwidth radio frequencies. The digital wireless camera has several advantages:
- A wide transmission range. It is commonly observed on open space between the receiver and the camera.
- High-quality audio and video.
- Functions and commands, such as playing music can be transmitted.
- Multiple receivers can be connected to one recording device.
Uses and applications
Home
Security Systems
Wireless
security cameras are becoming the talk of the town in the consumer market since
it is an effective way of having a comprehensive surveillance system installed
for a less expensive price. The security cameras are ideal for people renting apartments
since there is no need to run extension cables through ceilings or walls.
Additionally, lack of wiring avoids damage looks on a building.
Barn
Cameras
Wireless
signals can be transmitted from one building point to another in places where
it is not possible to run wires due to obstacles. A common use of these is
watching a barn with animals.
Law
Enforcement
Wireless
security cameras are used by law enforcement agencies. They use these cameras
to deter crimes. The cameras can be
installed in many locations and data transmitted through government wireless
network.
Wireless
security cameras work best when in an open clear line of sight between the
receiver and the camera.
Source: Click
Here
