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 WHOLESALE 4pcs Color Dome Camera 480 LINE Surveillance  US $99.99
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 LOREX VQ1636HRB PRO SERIES DOME SURVEILLANCE CAMERA US $179.95
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 LOT FAKE DOMES VIDEO SURVEILLANCE CCTV SECURITY CAMERAS US $19.75
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Skylink SC-100 Security System Deluxe Kit List Price: $129.77 Sale Price: $88.50 Average Rating:   |
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Designed for use in small- to medium-sized homes or offices of up to 3,000 square feet, the Skylink SC-100 Security System Deluxe Kit helps you protect your family from unwanted intruders or theft, while also giving you real peace of mind in case of emergencies... |
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Skylink SC-1000 Complete Wireless Alarm System List Price: $176.12 Sale Price: $134.99 Average Rating: |
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Featuring rolling-code technology, the Skylink SC-1000 Complete Wireless Alarm System provides maximum security and reduces the likelihood of false alarms. Suitable for homes, offices, 24-hour stores, businesses, or wherever security is a concern, this all-in-one system offers a 100-foot operating range, installs in minutes, and requires no monitoring services or fees... |
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LTS LTD04HTSK 4-Camera H.264 Realtime DVR Security System with 320GB, Mobile Phone Live View, VGA output List Price: $499.99 Sale Price: Too low to display Average Rating:  |
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GE 51107 Smart Home Wireless Alarm System Kit List Price: $29.99 Sale Price: $24.99 Average Rating: |
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The GE 51107 Personal Security Alarm Kit includes everything you need to help secure your home, including a deluxe door alarm with a four-digit keypad and three independent window alarms. Best of all, there's no wiring or drilling required for installation... |
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LTS LTD08HTDK 8-Camera H.264 Realtime DVR Security System with 500GB, Mobile Phone Live View, VGA output List Price: $799.99 Sale Price: Too low to display Average Rating:  |
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DVR Specifications Compression: H.264 Video I/O: BNC 8 In / 2 Out, 1 VGA Out Audio I/O: RCA 8 In / 1 Out Display Resolution: NTSC: Up to 704 x 480 (D1) Display Frame Rate: NTSC: 240fps Recording Resolution: NTSC: 704 x 480 (D1) / 704 x 240 (HD1) / 352 x 240 (CIF) Recording Frame Rate NTSC: 240fps Record Modes Continuous, Motion Detection, Manual, Sensor Triggered, Time Schedule Recored Picture Quality: Low, Normal, Hight, Highest HDD Interface Support: 1 SATA HDD... |
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Wireless Home Security System List Price: $199.95 Sale Price: $77.94 Average Rating: |
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Mace Brand Wireless Home Security System Why spend hundreds of dollars on a security system and pay monitoring fees when you can get the MACE WIRELESS HOME SECURITY SYSTEM for a fraction of the cost? This system detecets motion or a door or window opening, activates an alarm and cals your phone... |
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Driveway Patrol Sensor and Receiver Kit List Price: $39.99 Sale Price: $9.99 Average Rating: |
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When a visitor--wanted or unwanted--approaches a house on foot or in a vehicle the motion-detecting sensor unit of this warning device sends a signal to the receiver indoors, which chimes an alert. The device is wireless and has a 400-foot range... |
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Skylink SC-10 Security System Basic Kit List Price: $101.93 Sale Price: $76.95 Average Rating:  |
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DIY Wireless Security System - Easy to install and ready to use, no programming is required. Rolling Code Technology - Leading edge technology, provides maximum security & reduces false alarm. Ideal for homes, apartments, convenience stores, gas station and condominiums... |
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SecurityMan SM87B Wireless Door/Window Sensor for AirAlarm Home Security System (Silver) List Price: $19.99 Sale Price: $10.16 |
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SM-87B is an add-on wireless magnetic door/window sensor for SecurityMan Air-Alarm system. Wireless transmitting distance is up to 450ft (in open area). It includes a 23A 12V alkaline battery which could last up to 2 years. |
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SVAT GX5203 Wireless Portable Video Security System – 2.5-Inch LCD & Outdoor Night Vision Surveillance Camera List Price: $228.00 Sale Price: $129.99 Average Rating: |
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The GX5203 is an outdoor wireless color camera system that can be hidden for undercover indoor use. It comes with everything you need to start monitoring. The small but powerful bullethole camera is wireless and features automatic night vision (CDS sensor)... |
Surveillance Dome Camera
As with regular surveillance cameras, the lens on a surveillance camera determines how wide an image is created and how much light is let in.
The lenses you purchase should match the format of your surveillance camera: 1/4" lenses work best with 1/4" cameras. It is possible to use a larger format lens than the surveillance security camera calls for, but it is not recommended.
Also, fixed focal length lenses offer only one set field of view and are the least costly. To change the resulting image, you need to use a different lense. Variable focal length camera lenses and zoom lenses offer greater flexibility, allowing you to adjust your image's field of view. Motorized zoom lenses, the most costly type available, give you the ability to control your cameras remotely. If you want to zoom out for general surveillance and in for detail when you spot suspicious activity, motorized camera focus is preferable.
If you will be using the surveillance camera outdoors, look for a lens with an automated iris. As in the human eye, the iris of a lens is what controls the amount of light coming into the surveillance camera. Automated irises can significantly improve performance for outdoor cameras, where light levels vary considerably. However, you can save money and use a manual iris lens when the scene illumination never changes, for example in an illuminated store or office, but we do not recommend it.
Dome housings like this protect PTZ cameras and hide their orientation.
Pan, Tilt, Zoom
For advanced security applications, you may want a pan, tilt, zoom (PTZ) camera. With the right equipment, a camera operator can pan (scan left and right), tilt (look up and down), and zoom in and out. The significant catch is the cost: PTZ systems are a higher cost than fixed cameras, however most users find them the most effective for surveillance.
Camera Housings
Cameras need to be protected from potential harsh elements. Housings can range from simple coverings, to impact-resistant protection, to outdoor housings that include heaters and blowers for cooling. A more specialized type of housing is the dome: tinted Plexiglas hemispheres that prevent subjects from seeing which direction a camera is pointing. Choose the right housing based on the placement of the surveillance camera and its expected usage.
About the Author:
Mark Allen is a frequent writer on surveillance cameras.
Article Source: ArticlesBase.com - Security and Surveillance Camera Lenses
