Security
camera systems and CCTV surveillance are absolutely essential for vigilance at
homes, offices, banks, shopping malls, clubs, hotels and other places. Security
camera systems are the most popular vigilance systems. Major types of CCTV
cameras include dome cameras, bullet cameras and box cameras. Many CCTV camera
systems have infrared night vision to facilitate vigilance in darkness. The
security camera systems allow zooming at various distances at various angles
for maximum security vigilance. Security systems Wollongong and CCTVs Wollongong are available at
affordable rates from security service providers.
There
are two kinds of CCTV cameras - analog cameras and IP cameras. Analog CCTV
cameras are most popular. IP CCTV camera systems also provide several useful
features that make them important for commercial complexes and businesses. We
should remember that coaxial cables can run up to three hundred feet and this
factor might pose a problem for large buildings. The IP cameras have IDF
locations. The IDF network switches connect network traffic to MDF. IDFs are
located in various parts of a building and MDF is the server room. The network
video recorder is located at the MDF. Choosing the right kind of chip is
important for IP security camera systems. CMOS chips are cheaper and provide
higher megapixels. PoE (Power over Ethernet) allows IP cameras to have a single
cable for power supply to the camera as well transmission of video footages. CAT5e
or CAT6 can be used for the IP cameras.
There
are two types of night vision security cameras. The first type of security
camera uses infrared light for night vision. The second type of night vision
camera makes use of thermal energy. Most crimes and illegal intrusions occur at
night so night vision cameras are absolutely essential for night vigilance or
vigilance during darkness. The infrared night vision cameras use infrared light
to illuminate the premises and then record images. Infrared light sources
cannot be detected by people in the premises. Factories and industrial
complexes mainly use thermal energy dependent night vision cameras. These
cameras detect the heat radiating from humans and objects and later transform
this into image form.