 Video
images are transmitted, relayed and received using radio-waves
(like cell phones, TVs and radios do).
Good for outdoor applications with a
line of sight up to 3 miles.
Basic Components:
- at least one video camera/transmitter
- power supply (typically 12-volt
DC)
- receiver and antenna
- cable (to connect your receiver
to your monitoring equipment)
- monitor and recording device
Downfalls:
- Signal
interception can occur if there are other transmitters in the
area (eg. cell phone towers, news stations, radio stations)
- Wireless radio signals can be
blocked by buildings or trees
- Transmitters deliver microwave
radiation - there has been past evidence of health problems to workers
stationed near large transmitters.
- Wireless security cameras can be
finicky, and not as reliable as cabled video surveillance options.
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 Wireless IP
network cameras are basically a computer and camera all-in-one:
-
They are connected to your network
through a router and a power source. You control the cameras from a
standard web internet browser. (all you need is internet access.)
-
Software is embedded in each IP camera
-
If someone triggers the camera through
motion, it emails you.
- IP cameras allow authorized
viewers from different locations to simultaneously access images from
the same camera.
-
IP network cameras are great for
monitoring a large number of offices from one central location.
-
You don't need a computer at each
location you want monitored.
Downfalls:
-
Interference can occur from concrete
walls, etc.
-
Requires an Internet account, and may
require obtaining additional hardware such as a modem, a hub, or
router with a 10Base-T Ethernet connection.
-
The IP camera will not be accessible
unless the Internet connection is active.
-
The frame rate of the video image viewed
across the Internet is dependent upon the uplink speed of the Internet
connection among other factors.
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