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How to choose a right home security system
How to choose a right home security system
the Cameras
1. Choose CCD chip
some people like cheap Cmos chip camera. But as an experienced security camera seller and installer, we suggest you to choose CCD chip camera. even 1/4' Sharp chip cam will be much better than Cmos. and Sharp is only a few bulks more expensive.
2. Choose the correct lens
To monitor the door entry, a wide view angle lens is more fitting. -- so , 3.6mm is better choice.
1/4' CCD
3.6mm -- 80 deg
6mm -- 60 deg
8mm - 40 deg.
1/3' CCD
3.6mm -- 90 deg
6mm -- 70 deg
8mm - 50 deg.
3. Day/Night cameras
with IR leds. -- still will not be able to work in completed dark -- besides it needs solid object to reflect the IR lights.
but most infrared cameras are good for home use. They are color at day time, turn to black/white when light is not enough
for recorder
1. PC based record -- dvr card
software compression cards save money, but it depends on computer too much. Sometimes there are a lot of problems could not be resolved at all... kinda annoying. but if you are a computer geer, go ahead for this kinda stuff ;-) when you beat them, they delight you very much!
Hardware compression cards are good. But their price is almost equal to a standalone DVR.
2. Standalone DVR
not as expensive as before ^_^ . Most of the standalone DVR nowadays are for home use. There is no professional knowleadge required. Highly recommend for DIY fans.
Cables
Wired system are much better signaled. But to wire is troublesome to most of us i believe. To video wire the cam, to power leads the cam...
Now there is All-in-one cables -- siamese cables , or we say, video/power combined cables. That make things a little easy.
--- How about wireless system?
Remember the news that a mother received the NASA video from her baby monitor? That was the Wireless! Haha.
The signal is very easy to be interrupted. Unless there is more painful to wire than to receive what you dont want to see, we do like you to buy Wired system.
* What is a Video server?
A Video server, is the popular expression for a Web attached Video Server, connected to a digital network, i.e. LAN. The purpose of the Video Server is to, automatically or on request deliver live video to you browser or other applications over a digital network. This server function can also be integrated into a network attached (or IP) camera.
* What is the purpose of Video Servers on the network?
The purpose of a Video Server on the network is to provide a very easy way of distributing live pictures so they can be viewed by any computer on the network or Internet. There is no need for a separate Video surveillance system with coax wiring and dedicated monitors tucked away in a security office.
* Where is the Video Server or IP Camera connected in the network?
Practically anywhere on the network. As the Video server or network attached camera (IP Camera) is a self contained web server it connects to your router or hub in exactly the same way as a workstation, server or other peripherals.
More info about IP Cameras?
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