Specifications:

• Image Sensor: 1/4" sony CCD
• Variable Focus: 22X optical zoom
• Horizontal Resolution: 420TVL
• Min. Illumination: 0.1 lux
• Lens: 3.9-85.8mm
• Day & Night: Internal (off / B&W / color), sensitivity X 60
• TV System: PAL / NTSC
• Backlight Compensation: Internal (on / off)
• SNR: >48dB
• Control Method: Screen menu / RS-485 interface control
• Power Consumption: DC 12V + 10% (3.6W)
• Video Output: 1.0vp-p,75Ω VBS
• Operation Temperature: -10℃~+50℃
• Operation Humidity: 0%-96%
• Dimension: 103 x 58 x 58mm / 4.06 x 2.28 x 2.28in (L x W x H)
• 1/4" sony CCD
• 3.9-85.8mm manual varifocal lens
• 22X optical zoom
• With memory recovery function and day & night function
• It install IR color filter which can response infrared rays, it can express fully the function of the day & night 
• Auto focus, camera can focusing auto from 0.1m to limitless distance
• This camera using a high density CCD, which provides clean, noiseless and reliable pictures
• Remote control operations are possible through RS-485 signal interface also can control the lens by outline

Details:

• /4inch SONY CCD 420TVL CCTV Wired Color 22X Digital Zoom Camera is an attractive, tamper resistant corner-mounted housing

• Ideally designed for use in elevators, this compact unit is also perfect for stairwells, entrances, hallways, small offices, jail holding rooms

Security Camera

• Security is an essential part of any store, shops, or place that needs to be monitored. If it is not monitored, anything could happen, so you must go ahead and take the precaution to prevent it from happening or be able to do something when it does occur. For example, if you own a shop and it gets robbed, it is horrible to not being able to do anything about it. If you have the surveillance tapes that you have recorded, you can use that as evidence and show the police who may be able to get the man. As you can see, surveillance is important
• A security camera monitor allows a viewer to see the video feed from a security camera. It is not the most important decision to make in a home security system, but there are some bits of advice that should be followed.
• Security camera monitors should match the resolution of the security camera sending the video feed. Having a security camera monitor with a higher resolution than a security camera is a waste of money, and a security camera monitor that has a lower resolution than a security camera will not be able to take advantage of the camera's capabilities. A security camera monitor should also be in color if the security camera's feed is in color
• The size of the security camera monitor also matters. Multiple video feeds require a larger size security camera monitor, while a single video feed only needs a small monitor, around nine inches.
• Finally, figure out what kind of monitor can handle the extended use. Televisions, for instance are poor security camera monitors. Computer monitors are designed for extended use, with flat-screen LCD monitor being the best, due to the lack of heat it produces

Security Camera Work

• Basically, a camera set into position with the help of what is known as a video transmitter running to a receiver allows the view from a security camera in a specific place or aimed in a certain direction, such as in a parking lot or door entrance. The security camera whether it is wireless or not, then makes it possible for the surveillance of anyone or anything through sending visual signals through the lenses back to a security monitor which is connected directly to the system
• In some cases security cameras are remotely operated, while others rely on the actual surveillance of a person sitting in front of the security monitor at all times in a separate area. Another form of security camera, simply records the surveillance and it can be viewed at another point and time. Security cameras all have to have power of some kind in order to work however
• Additionally security cameras work on frequencies as well as range. Different concepts are taken into consideration when a security camera is installed. Therefore, there are many security cameras on the market today. Some are better than others, while some security cameras are basic and simple, to those security cameras that are very complex
• One of the worst materials a security camera would have to go through would be metal, these types of security cameras are high frequency cameras and are very expensive. Most wireless cameras are limited to four different frequencies while others that must have hidden video lines such as in ceilings or walls can have additional frequencies. The range of reception on security cameras vary. Security cameras provide the initial perception that the issue is safety, while the second of course is protection, from theft or vandalism of property. The security cameras come in many different designs as well as types. Some security cameras help assist authorities when trying to apprehend suspects in crimes or other acts of violence, or vandalism
• You want to have a good reception especially if the security camera that is in use, is the type that simply records surveillance. As opposed to a security camera that has a person monitoring at all times. In this case you want good reception as well but it doesn't have to be nearly as clear. Security cameras can be as small as a button on a shirt, while others can be the size of an average camcorder. The size of a security camera varies as well
• Price doesn't necessarily mean better, depending on what the security camera will be used for. If the camera is going to be for personal use then one that isn't that expensive will probably do what you need it for. Security cameras are made to work for the security of people, places, and things of value, as well as keeping places safe and protected. In some cases security cameras are used to give people the peace of mind of feeling safer than they normally would without one

Package Included:

• 1 x 1/4" Sony Chip 420TVL Zoom Day and Night Color Camera