Security Camera : What is it?
| Security cameras record events in specific areas to prevent theft or unauthorized entry. They are commonly used in homes, banks, car parks, subway trains, and other public places. Most security cameras are connected to a TV screen or other viewing device, using cables or wireless links. In large homes, they can be set up in one room and viewed from another, allowing users to monitor events while doing household tasks. Some models can also broadcast videos or save them in removable drives for later viewing. |
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Kinds of Security Cameras include the following: |
Black and white (B/W) security cameras
B/W security cameras record videos in monochrome or grayscale tones. They are used in areas with low light conditions, such as basement car parks. They cost less than color cameras while delivering equal or even better resolutions.
Color security cameras
Color security cameras record in full color, but are not as sensitive as B/W cameras. They are not suitable for nighttime monitoring, unless the area is well illuminated. Some models have color filters that allow them to record in B/W.
Wireless security cameras
Wireless security cameras connect to output devices using radio frequency or Bluetooth. Most models have a range of up to 100 feet. They are ideal for seasonal or temporary use, such as in beaches and outdoor events.
Night vision security cameras
Night vision security cameras use infrared lenses to record images in dark and low-light areas. The infrared coating detects body heat and displays warm objects, such as human bodies, in contrast with the cooler surroundings. They are commonly used for overnight monitoring in back entrances and infant rooms.
Vandal-resistant security cameras
Vandal-resistant security cameras have reinforced housings and lenses designed to resist heat, impact, and other forms of damage. They are used in schools, city centers, prisons, and other places that are prone to vandalism. Some models have an alarm system that goes off upon impact or rough contact. |
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Lux rating: Choose a security camera with a low lux rating for monitoring in poorly lit places. A low lux rating means that the camera needs less light to deliver clear images. Low lux cameras also make cheaper alternatives to infrared cameras for nighttime monitoring.
Power source: Choose a security camera that can run on battery and AC power. This will allow you to reserve the battery power for backup in case of a power failure. Look for one a power indicator light to alert you when you need to recharge or replace your batteries. |
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