Sabtu, 08 Maret 2014

Im considering buying the Defender Sentinel security camera system looking for opinions?




Brian


I looked on amazon, but if anyone else had something to say I would apreciate it, things such as durability of the cameras, picture, quality of the dvr's etc


Answer
Hello
There are 2 types of DVR;s PC based and a standalone

PC (a card and software installed that uses your PC to store recorded video)
Standalone looks like a DVD player non PC based (does not use PC to record images)


Not all CCTV equipment is created equal, in fact there are many options that offer varying performance much like the automobile industry. In the world of CCTV you can find the equivalent of a $2,000 golf cart and a $350,000 Ferrari and everything in between. Both have 4 wheels but that's where the similarities end, itâs under the hood that counts.

Just like any other consumer electronic in the end you get what you pay for. Most retailers and sellers make about a 40-80% profit margin, this is after costs like shipping and overhead. That means when you buy a product that costs $100.00 the manufacturer usually has only spent $30 to build it which simply means itâs not a good product and will probably have a working life of about 2 months. There is a reason these products are 1/10 of the price of good and reliable DVR brand names. The type of seller these products attract are online sellers (ebay) and will make profits margins as low as 2% which means they canât afford to offer good service or allow for RMAs (returns). Cheap products are like disposable razors they are NOT designed to last for a long time and you will end up replacing them every 2 months.

Now some products can be made cheaply like ipod cases, screen protectors, and other simple products with no moving parts or electronics. DVRs need to be good quality as they run 24/7 (20X more than the average electronic device) and process anywhere from 30-480 frames per second which in a year is over 15 billion images, and a good DVR should last 3-5 years.

A true DVR and camera require years of research and development to facilitate the seamless integration of both the hardware and software. DVRs are highly complex systems that must run 24/7, processing millions of images per day and are one of the few products that canât be made both well and cheaply. Cheap and inexpensive products like Q-see, X10, Swan, Lorex, and other low grade DVRâs and cameras sold by Tiger Direct, Target , Newegg, radio shack Sams Club, are not used by any security professional and should only be used by hobbyists.

To be honest these retailers sells complete Garbage and is not used by anyone who has worked with CCTV or security products. They are poor quality especially for IR cameras, due to low quality material, low S/N ratio, and c grade CCD image chips.

If you are only going to spend 70$ on cameras then you should buy 15 dummy cameras they will be just as effective and cheaper.

Also as far as night vision or IR cameras go most do not give good images in the dark. Many companies claim good night vision but there are only a handful of brands who give night vision over 30 feet out doors. normally if a cameras is rated 150 feet of IR it will give you ok images at 30 feet at night and good images at about 20 if rated for 60 feet you might get 15 indoors and will be useless outdoors.

Some good CCTV brands that I recommend are Bosch, Pelco, Honeywell and Ascendent.

http://www.ascendentgroup.com (Great IR cameras)
www.honeywell.com
www.pelco.com/
http://www.bosch.com

Economical DVR's
Two good economical DVRs I would recommend are Ascendent's AVP-4120 DVR or Pelco's DX-400. They will allow you to view all your cameras instantly from anywhere in the world using either IE, or a client software. The AVP-4120 uses the latest H.264 codec to improve streaming and recording time, and will allow PCs and Apple computers to remotely view cameras. These are the DVRs I would recommend that are good quality and affordable from companies who stand behind there products.

Again if you are going to buy cheap CCTV products, save money and get dummy cameras they are just as affective and you will be less disappointed.


Hope this Helps,

If you need anything else feel free to email me at
williammorales93@ymail.com

Where is the best place to buy a security camera?




Nellygirl2


Last night someone turned on the water faucet that is behind the shrubs. So, someone had to be scoping out the house my parents or "Mother" called the cops because she believed it was something serious. They found a golf club! Im guessing this person was going to beat whoever came out to check it out but punk out or we waited too long to even know that the water was even on. I heard it but didn't think much about it and my sister thought it was raining lol.


Answer
Bunny Im assuming you have no experience in CCTV products. just because a camera says high resolution and long range does not make it either, no professional recommends q see products.

Few problems:
480TVL is not high resolution
36 LED's (q see are not very powerful) will give about 35ft
6mm Lens (fixed lens cant adjust view 42 degrees (not 80 feet day or night)

Here is a true high resolution outdoor IR Camera
VIS-56IR-2910 (Ascendent Technology Group)
High Resolution outdoor Long-Range IR Camera
550TVL Day (600TVL at night)
56 high output IR LED's (110ft illumination)
2.9-10mm IR corrected lens
IP 67 nema 4x Rugged outdoor housing

http://ascendentdvr.com/vistaseries2/vis-56ir-2910.html

bunny there no point in giving advice when you don;t know what your talking about.


Hello you need a DVR and Camera

2 types of DVR's Standalone and PC based

Brand names who make good DVR's make good cameras.
I recommend Ascendent, Bosch, Pelco, Honeywell: Ascendent is best price and conformance but they are less well known.


I suggest you buy a PC based DVR has they have more processing power and normally have a much smaller file size and offer more features then Standalone DVR's. I know many people buy a cheap standalone DVR, only to upgrade to a PC based in 6 months especially when they are using it to manage a store remotely. Also PC based allows you to record up to 64 cameras where a standalone will have a limit of 16.

Many people have the misconception that a PC-Based DVR is simply an off-the-shelf PC with video capture (encoder) cards, display (decoder) cards and some generic OEM software. A true DVR requires years of research and development to facilitate the seamless integration of both the hardware and software. DVRs are highly complex systems that must run 24/7, processing millions of images per day. This makes consumer-level hardware inadequate for DVRs which is why Ascendent uses custom-built PCs with performance-level hardware.

My personal favorite DVR is Ascendent X4 series: Ascendentâs Tri-Fusion Hybrid Platform allows for the creation of a true hybrid surveillance system by utilizing the advantages of Analog, Megapixel, and IP technologies for unparalleled customization and expandability. I am working on government projects and use Ascendent cameras and DVR because the offer superior performance and cost less then comparable brands like bosh, Honeywell and pelco.

The X4 also uses the latest H.264/SVC codec offer video substantially better quality,. While its file size sizes is 30% smaller than MPEG-4, 60% smaller than MPEG-2, and exponentially smaller than MJPEG.

File size is crucial to streaming because most DVRâs on the market record at real time performance (30FPS per channel) so on a 4CH is trying to send 120, 8CH 240, and a 16CH 480 images per second which requires way too much bandwidth even for the most extreme internet connections.

The smaller the files size the more images are able to be sent, and the faster they can be processed improving both FPS and speed. File size is the heart of any DVR and goes far beyond just its streaming capabilities, as it also determines the recording storage time, how much you can back up at once, how fast it renders and searches video. The file size of a DVR impacts the performance of the DVR in just about every aspect from speed to longevity and is often the most important spec of any DVR.

If you are buying a DVR and streaming is a high priority I suggest you ask for a demo and connect to the DVR to make sure it is able to stream fast enough for your needs. Most DVRs say they have remote viewing but it is often too slow and laggy to be of any use especially if it is a standalone. Some good DVR brands that I recommend are Bosch, Pelco, Honeywell and Ascendent. These brands are what security professionals use, Q-see, Swan and Lorex are only used in residential applications because they are sold by Tiger Direct, Spytown, Newegg, Sams Club, Costco and other retail outlets but are not used by any security professionals also their tech support rarely speaks English as their first language...

These brand manufacturers also have a complete line of CCTV cameras for any application from residential to military.

http://www.ascendentgroup.com (Recommend)
http://www.honeywell.com
http://www.pelco.com/
http://www.bosch.com

I have done projects that required cameras to stream over satellite and cellular networks and the only DVR that could provide the video streaming was Ascendent Technology Groupâs X3 DVR. To give you an example of what a good DVR should stream like, below are instructions on how to connect to Ascendent's X3 DVR using Internet Explorer.

Instructions on how to connect to Ascendentâs DVR with Internet Explorer:

1) http://connect.ascendentgroup.com/ (Must be Internet explorer)
2) Install active X control
3) Hit âConnect)
4) DVR type PC
5) DVR code SITE-100
6) User ID Demo (case sensitive)
7) Password demo (lower case)
8) Hit extend config
9) IP address: 24.66.224.223
10) And hit connect

Again I recommend going with a PC based DVR but if you don't want to spend the money I suggest Ascendent's AVP-4120 DVR or Pelco's DX-4000 as they will allow you to view all your cameras instantly from anywhere in the world using either IE. The AVP-8240DVDUSB will also allow MAC platforms as well as PC to remotely view cameras and it uses the new H.264 codec but no standalone will offer the video streaming or performance a good PC based DVR will.

Ascendent Technology Group
http://www.ascendentgroup.com




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