Tag: CCTV

Colour Cctv Camera($ 35 usd)

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Wholesale SHARP CCD Dome Wired Colour CCTV Camera – PAL TV system with 420 PAL Horizontal Definition and Auto White Balance from China.

Knowledge of CCTV Cameras

Generally refers to used closed-circuit television outside broadcast television, such as the Industrial television, military television, medical television, underwater television.

The simplest is to use a closed-circuit television cameras will capture the signal sent to the monitor via cable TV, and it can capture the signal sent through the multi-channel distribution amplifier to use multiple monitors.

CCTV a very wide range of applications and are growing at an unprecedented rate, it can be said in various sectors in the national economy, any places where the use of modern technology, is inseparable from closed-circuit television. China Manufacturer Specifications
Image Device: 1/3 Inch Sharp CCD
TV system: PAL
Angular Field of View: 45 deg
Horizontal Definition: 420 PAL
Minimum Illumination: 0LUx F1.2
White Balance: Auto
S/N Ratio: 48dB
Scan area: PAL- 5.18×4.19mm
Scan frequency: PAL: 50Hz
Operation Temperature: -20~+50 deg C
Connection: BNC
Dimension: 119x119x75mm (LxWxD)
Power Adapter: 12V
Recommended Range for Objects: 5 M at night 15 M at day
Manufacturer Ref. : H49M8X77BKNV

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Security cameras are small cameras which are kept hidden in a corner of a room to monitor every movement made by the people. It is better known as close circuit camera or CCTV. They are extremely useful and are found in banks, malls, corporate sector, and schools. Instead of guards standing outside every room in an important building, it is better to keep an eye on all the rooms through a CCTV camera. They catch minute detail of what a person is doing and at what time. IP Surveillance Cameras in New York is very famous for their video surveillance. Lock and key and security guards have not only become a conventional way but also out of fashion. They go for a regular survey from house to house to check whether everyone has a proper security and if they do not, they are immediately taken care of.

Crime rates have gone up so much that one cannot leave their house without a tight security. Although they are small in size, but they are very powerful.So nowadays one can easily leave their valuables behind without worrying much.

Types of security cameras

Security cameras have different models. Some of them are mini dome IP cameras, network cameras, analogue cameras and etcetera. They are wireless and cover both outdoor as well as indoor activities.

If you are a citizen of long island, then you need not worry about security of your properties. There are a number of shops here which sells different types of video surveillance cameras. Look for the best shop that offers best deals. Choose the type you want and get it installed professionally. With a number of nanny cams installed in your house, only you will know where they are hidden. Security cameras in long island are now able to create safer homes and a theft free environment for the last three decades while an IP surveillance camera in long island are put up in such a place which will focus only a particular place or object. IP cameras are generally fixed near a cash register or in car park to observe something closely. They are also available in high definition resolution.

Security cameras in New York uses a more advanced technology. Since we cannot be everywhere at one time, our security cameras at home can give me regular updates regarding every visitor coming in and out of our house. The server of the main cameras of your house will be connected to your tabs or mobile phones. On the other hand,
Security cameras Nassau County will give you absolute security of your property as the showroom offers a wide range of high definition cameras which covers both inside and outside homes and they also offer a kind of mobile friendly video surveillance.

Black/White or Color?
Color Cameras are more popular, due to their clearer identifications. But, in low light conditions, B/W cameras are more ideal, because they generally require less illumination. Newer models of Day/Night cameras work as color camera during daytime and B/W at night.

2.What basic equipments are necessary to start video surveillance?
Camera body, Lens, Mount, Cable, and Power Supply.
Some cameras (like dome and bullet type cameras) come with built-in lenses. You will also need CCTV monitor (or regular TV), quad splitter or switcher to combine more than one camera, recorder (like DVR), outdoor housing case and other accessories. Wireless systems are great way to avoid cabling. Network based Web Cameras and DVRs are for remote surveillance.

3.What if I need more than one camera?
A quad splitter, 4 channel or 8 channel switcher, or multiplexer can be used to combine multiple cameras into one monitor or recorder. DVRs usually come with a built-in multiplexer.

4.Hidden Cameras
If you want a hidden camera, you have two options; you can either build one with a mini or an ultra-mini camera, or buy one. Some ultra-mini cameras are only as big as a quarter to hide more easily. Hidden cameras built-in clocks, radios, or smoke detectors are also available but are generally more costly. Please note that, in most US states, using hidden cameras with audio in a covert way is prohibited.

5.Placing cameras outdoors
You may use an outdoor housing case, with or without heater and/or blower. The heater and/or blower built-in housing cases generally require a separate power source. Some cameras are made water resistant and do not need separate housing cases. Some of these also come with removable sunshields.
6.When are infrared cameras necessary?

Economically commercialized infrared cameras, some also water-resistant to be installed outdoor, can see up to 40 to 80ft distance in total darkness. You may also use infrared illuminators, which can illuminate up to 100ft (Color cameras, unless their IR filter is removed, do not work with infrared illuminators.) Infrared cameras work as ordinary video camera during daytime. Color infrared cameras work as B/W ones at night.

7.What is an ideal angle for a lens to cover?
Widely used and recommended angle of view of the lens for surveillance purpose is 72o to 78o. Narrower will give you clearer pictures. Wide angles like 92o can cover more area but it may show distorted pictures.

8.Vari-focal vs. Zoom Lens
Focal length and focusing for vari-focal lens should be adjusted respectively while zoom lens focuses automatically when the focal length is adjusted. Manual zoom lens needs to be manually adjusted while motorized zoom lens can be controlled with a remote controller.

9.Manual Iris vs. Auto Iris

If the lighting condition changes significantly and frequently, like the sun, an auto iris lens is required. If the lighting remains same, a manual iris or a fixed iris lens is recommended. Most CCTV cameras accept DC auto iris lens while some special cameras use video auto iris lens.

10. Do I need pinhole lens?

A pinhole lens with a tiny opening can be hidden in the wall, ceiling or other objects. Some mini cameras have a built-in pinhole lens. To mount a pinhole lens to a standard camera is very expensive.

11. CCTV Monitor vs. Standard TV

If you are use only one camera, a TV (which has a RCA video input) is definitely recommended. Even for more than 1 camera, if you use a processor like a quad splitter, a switcher, or a DVR (Digital Video Recorder), a TV would be fine. But, for special features like slave video outputs (to be connected to additional monitors), alarm systems, or for multiple inputs, professional CCTV monitors work best.

12. CRT vs. LCD Monitor
Conventional CRT monitors are bulky and heavy while they are cheaper than LCD monitors which has higher resolution. If you have enough budgets and want to use one monitor for both CCTV and computer, LCD monitor is recommended. 17″ & 19″ are popular sizes for LCD monitors.
13. Monitor Input Connectors

BNC is commonly used for connecting to both CRT and LCD monitors. These days, most LCD monitors have an S-Video input as well as a 15-pin Mini D-Sub for PC Signal input.

14. Wireless vs. Wired Transmission

A wireless system is convenient in avoid cabling works, but can sometimes be affected by high voltage power lines, unseen razor waves, large machines like lathes, and metal walls. Wired transmission guarantees stable video. Coaxial cable is most used for CCTV cameras.

15. 12VDC vs. 24VAC

24VAC system is more professional and most CCTV cameras work with a 24VAC power supply. Mini cameras, dome cameras, and bullet type cameras are usually 12VDC system. Recently developed cameras have both 12VDC and 24VAC inputs.

16. Battery operated cameras

Many small sized cameras work with 12VDC battery pack; however it requires correctly matched polarity. You may also use a “power cord” (easily found at any auto parts shop) that can draw 12VDC through the car cigarette lighter.

17. Motion detection

Most DVRs now come with built-in motion detection software to trigger recording. You can program the sensitivity and detection zone. It works with any change of the pixels within the picture frame. You can also install a hardware motion detector connected to the DVRs to trigger recording.

18. Pan, Tilt, and Zoom control

A dome type camera that already has built-in PTZ is easy to install, maintain, and control. You can also control it on the computer monitor with the mouse if the PTZ system is connected on the network via a video server.

19. Time Lapse VCR vs. DVR(Digital Video Recorder)

Conventional Time Lapse VCR, despite the inconvenience in reviewing the recorded pictures, is more economical than a DVR (Digital Video Recorder). DVRs are more popular for its convenience and picture quality.

20. Remote Surveillance over the Network

Network DVR or Web Camera, connected to the Internet or LAN and assigned with an IP address, can be monitored at a remote place. DSL or T-1 line is required to be connected to the Internet.

21. HD CCTV System

As the TV Broadcasting changed to HD (High Definition) System, it’s time for HD cameras to come to the market. Still, the traditional standard resolution system does not accept HD cameras and you have homework to prepare peripheral devices such as recorders to accept the HD cameras.

CCTV system or the Closed Circuit Television system is a system that sends signals to a specific monitor or monitors. This means that it can only be accessed through a connected monitor and by no way be able to transmit openly. It is excellent for homes and places of work since the system is very easy to install and allows live or recorded viewing.CCTV cameras are ideal for commercial and public places like malls, restaurants railway stations and airports. Criminals are easily apprehended using this system. It records captured shots that can be zoomed in so faces of people would be more clear and recognizable. Would-be criminals are less likely to execute their plans once they learned that they are being watched and so it contributes significantly to lessen the number of crimes.

A CCTV camera can also be used to observe employees. This will help in making sure that workers do their job well even if their boss or the owner is not around. This also means saving time and effort in behalf of business owners.There is no need to have someone sitting around the clock watching the monitors as the security feeds can be recorded and reviewed later if required. This reduces the need for security guards as a smaller number of guards can now manage a larger area since they have cameras that can provide footage of most of the property.A hidden security camera is an excellent way to catch shoplifters. It can be installed and be monitored everywhere an ideal technique for store managers who want catch shoplifters on the act. Once arrested, the recorded images can be brought to the authorities as evidence against the shoplifter, making the prosecution procedure easier.

There is no need to have someone sitting around the clock watching the monitors as the security feeds can be recorded and reviewed later if required. This reduces the need for security guards as a smaller number of guards can now manage a larger area since they have cameras that can provide footage of most of the property.CCTV cameras provide a lot of advantages to various people, from citizens to homeowners. Many different departments of the government also use these to try and aid in catching criminals, providing information and keeping law and order in cities. They are an excellent way to increase security both in homes and public places without having to use a lot more human resources.

Most of these wireless units have a high-resolution image that makes it very easy to identify faces and other physical characteristics. This makes the cameras ideal for use as part of the security for research facilities and other establishments. Security personnel can easily monitor all activities within range of the cameras, and clearly note any suspicious or unauthorized behaviour, while getting a clear image of the person engaged in the activities.CCTV systems can be useful for preventing stealing vital information the kind of information that needs to be shredded. These cameras are useful for discouraging attempts of bad guys that belong both outside and inside the office. And if you catch the perpetrator in the act, you can easily provide evidence of the misdeed and give appropriate actions.

Rohan, for information on CCTV CCTV Camera CCTV Security System CCTV Board Camera,CCTV Box Camera ,CCTV Cable Accessories,CCTV Cables,CCTV Dome Camera,CCTV Lens,CCTV Recorder,CCTV Surveillance Camera,CCTV Surveillance Equipment,CCTV Surveillance System,CCTV Systems,CCTV Transmitter,CCTV Video Power Cable,Day Night CCTV Camera,Infrared CCTV Camera,Night Vision CCTV Camera ,Waterproof CCTV Camera and Wireless CCTV Camera.Please visit our site : http://www.adnetworks.in/

There are so many dealer of Spy Camera in Chennai. Chennai is placed at south side in India and that place crime rate is on the top And their law and order is not good. People are very dangerous and they kill anybody for small money. My experience in Chennai is not good because peoples are very dangerous, one when I go to night walk I saw that huge people are drink on the road side and they spoke with people very roudly. My aunty tell me the situation of their city she said that they are not safe in our city because those area she live are very dirty and their police are not very helpful. She said that she use some of the security surveillance like CCTV, spy camera and different types of surveillance to protect us and our family.

My aunty shows their spy cameras which is placed outdoor from the house. It is CCTV it record all activity outside the house and one more feature of this gadgets is it record in day and night both. When I see the picture quality of this cameras I am shock because it awesome. Next Morning I am going to see the market of spy cameras and when we go in the market there are many products are seeing in the market. All products are very good and their quality is excellent. We see one product which is name is spy pen camera it looks like a normal pen. But when dealer show their feature we are shock because a very small camera lens is placed at the top of the pen camera. We see various dealer of Spy Camera in Chennai.

After Chennai I am going to Hyderabad for business purpose with the spy pen camera. Me and my friend see in Hyderabad spy camera are also used by normal people and they used them in our daily life. One person hide spy camera in their keychain, he show their keychain camera and suggest us to buy any Spy Camera in Hyderabad dealers because they all are very good in their business and they provide better service after sale. They provide 1 year replacement warranty with accidental damage protection. They advice me you can buy spy camera for a reputed company named Action India Home Products which is sell spy camera all over the India. Head office of Action India Home Products is in Patel nagar Delhi.

We see some of the new Spy Gadgets in Hyderabad like pinhole camera, cap, Snake, Button etc. all of them are very good and they are available in affordable price. One feature of this gadgets are wireless this feature makes easy to use them and no difficulty to setup them.