Do you currently have Video Surveillance at your company?
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Types of Wireless Security Camera Technology
Like the wireless networks they transmit their information over, wireless security cameras conform to the universal wireless networking standards set by the IEEE (Institute of Electrical and Electronics Engineers), which are referred to by the convention 802.11x. Chances are, you’ve heard the term “802.11b” or “802.11g” thrown around in regards to a wireless router and networking. These terms also dictate the way that wireless security cameras network as well. It only makes sense, as security cameras and computer networks, if they are to work together, should be operating by the same set of standards.
With the IEEE wireless standards, the letter after 802.11 denotes a new class of surveillance. There have been several thus far, each with their own range and frequency:
| Type |
Release |
Frequency |
Data Rate (Max) |
Range (Indoor) |
Range (Outdoor) |
| Legacy |
1997 |
2.4-2.5 GHz |
2 Mb/s |
~25 meters |
~75 meters |
| 802.11a |
1999 |
5.15-5.35/5.47-5.725/5.725-5.875 GHz |
54 Mb/s |
~30 meters |
~100 meters |
| 802.11b |
1999 |
2.4-2.5 GHz |
11 Mb/s |
~35 meters |
~110 meters |
| 802.11g |
2003 |
2.4-2.5 GHz |
54 Mb/s |
~35 meters |
~110 meters |
| 802.11n |
2006
(unapproved draft) |
2.4 GHz |
270Mb/s = 2x2 ant |
~50 meters |
~126 meters |
Most cameras available today operate using 802.11g, the latest version of wireless standards from the IEEE. Some cameras, however, are beginning to use MIMO (or 802.11n) technology in their wireless security cameras. MIMO or Multi Input Multi Output refers to a method which uses multiple antennas for sending and receiving wireless signals. Unlike traditional wireless standards, which rely on one antenna for sending and one for receiving, MIMO’s multiple outlets allow it to stream footage much faster than ever before.
MIMO technology is a great alternative for wireless security cameras, as it allows wireless networks to stream much higher resolution footage without occupying the majority of a network’s bandwidth.
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