What is a CCTV Camera?

Wireless security camera systems are closed-circuit television (CCTV) cameras that transmit a video and audio signal to a radio receiver through a radio band. Many wireless security camera systems require at least one cable or wire for power; “wireless” identifies the transmission of video/audio. However, some wireless security camera systems are battery-powered, producing the cameras truly wireless throughout.

Wireless cameras are proving extremely popular among modern security consumers because of their low installation costs (you don’t have to perform expensive video extension cables) and flexible mounting options; wireless cameras could be mounted/installed in locations previously unavailable to standard wired cameras. As well as the simplicity and capability of access, wireless security camera allows users to leverage broadband wireless internet to supply seamless video streaming over-internet.

Source: cctv camera

Types

Analog wireless

Analog wireless may be the transmission of audio and video signals using radio frequencies. Typically, analog wireless includes a transmission selection of around 300 feet (91 meters) in open space; walls, doors, and furniture will certainly reduce this range.

Analog wireless is situated in three frequencies: 900 MHz, 2.4 GHz, and 5.8 GHz. Currently, nearly all wireless security cameras are powered by the two 2.4 GHz frequency. Most household routers, cordless phones, gaming controllers, and microwaves are powered by the two 2.4 GHz frequency and could cause interference together with your wireless security camera. The primary difference between 2.4 and 5 GHz frequencies is range. 900 MHz is well known for its capability to penetrate through barriers like walls and vegetation.

Advantages include:

  • Cost effective: the price of individual cameras is low.
  • Multiple receivers per camera: the signal in one camera can end up being found by any receiver; you could have multiple receivers in a variety of locations to produce your wireless surveillance network

Disadvantages:

  • Vunerable to interference from additional household devices, such as for example microwaves, cordless phones, gaming controllers, and routers.
  • No signal strength indicator: there is absolutely no visual alert (just like the bars on a mobile phone) indicating the effectiveness of your signal.
  • Vunerable to interception: because analog wireless runs on the consistent frequency, it’s possible for the signals to be found by other receivers.
  • One-way communication just: it isn’t easy for the receiver to send signals back again to the camera.

Digital wireless cameras

Digital wireless may be the transmission of audio and video analog signals encoded as digital packets over high-bandwidth radio frequencies.

Advantages include:

Wide transmission range-usually near 450 feet (open space, clear type of view between camera and receiver)
Top quality video and audio
Two-way communication between your camera and the receiver
Digital signal means you can transmit commands and functions, such as for example turning lights on and off
You can connect multiple receivers to 1 recording device, such as for example security DVR

Wireless range

Wireless security camera systems function best when there exists a clear type of sight between your camera(s) and the receiver. Outdoors, and with clear type of sight, digital wireless cameras routinely have a variety between 250 and 450 feet. Indoors, the number can be limited by 100 to 150 feet. Cubical walls, drywall, glass, and windows generally usually do not degrade wireless signal strength. Brick, concrete floors, and walls degrade signal strength. Trees that are in the type of view of the wireless camera and receiver could also impact signal strength.

The signal range also depends upon whether there are competing signals using the same frequency as the camera. For instance, signals from cordless phones or routers may affect signal strength. At these times, the camera image may freeze, or appear “choppy”. Typically, the perfect solution is usually to lock the channel that the wireless router operates on.