Wireless security camera
Encyclopedia
Wireless security cameras are closed-circuit television
(CCTV) cameras
that transmit a video and audio signal to a wireless receiver through a radio band. Many wireless security cameras require at least one cable or wire for power; "wireless" refers to the transmission of video/audio. However, some wireless security cameras are battery-powered, making the cameras truly wireless from top to bottom.
Wireless cameras are proving very popular among modern security consumers due to their low installation costs (there is no need to run expensive video extension cables) and flexible mounting options; wireless cameras can be mounted/installed in locations previously unavailable to standard wired cameras.
Analog
wireless is the transmission of audio and video signals using radio frequencies. Typically, analog wireless has a transmission range of around 300 feet (91 meters) in open space; walls, doors, and furniture will reduce this range.
Types of Analog wireless
Analog wireless is found in three frequencies: 900 MHz, 2.4 GHz, and 5.8 GHz.
Currently, the majority of wireless security cameras operate on the 2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and microwaves operate on the 2.4 GHz frequency and may cause interference with your wireless security camera. 900 MHz is known as Wi-Fi Friendly because it will not interfere with the Internet signal of your wireless network.
Pros
Cons
Digital wireless cameras
Digital
wireless is the transmission of audio and video analog signals encoded as digital packets over high-bandwidth radio frequencies.
Pros
A wireless security camera is also a great option for seasonal monitoring and surveillance. You can observe your pool or patio in the summer months and take down the camera in the winter.
the wireless signal must pass through.
Closed-circuit television
Closed-circuit television is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors....
(CCTV) cameras
Video camera
A video camera is a camera used for electronic motion picture acquisition, initially developed by the television industry but now common in other applications as well. The earliest video cameras were those of John Logie Baird, based on the electromechanical Nipkow disk and used by the BBC in...
that transmit a video and audio signal to a wireless receiver through a radio band. Many wireless security cameras require at least one cable or wire for power; "wireless" refers to the transmission of video/audio. However, some wireless security cameras are battery-powered, making the cameras truly wireless from top to bottom.
Wireless cameras are proving very popular among modern security consumers due to their low installation costs (there is no need to run expensive video extension cables) and flexible mounting options; wireless cameras can be mounted/installed in locations previously unavailable to standard wired cameras.
Types of Wireless Security Cameras
Analog wirelessAnalog
Analog video
Analog video is a video signal transferred by an analog signal. An analog color video signal contains luminance, brightness and chrominance of an analog television image...
wireless is the transmission of audio and video signals using radio frequencies. Typically, analog wireless has a transmission range of around 300 feet (91 meters) in open space; walls, doors, and furniture will reduce this range.
Types of Analog wireless
Analog wireless is found in three frequencies: 900 MHz, 2.4 GHz, and 5.8 GHz.
Currently, the majority of wireless security cameras operate on the 2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and microwaves operate on the 2.4 GHz frequency and may cause interference with your wireless security camera. 900 MHz is known as Wi-Fi Friendly because it will not interfere with the Internet signal of your wireless network.
Pros
- Multiple receivers per camera: the signal from one camera can be picked up by any receiver; you can have multiple receivers in various locations to create your wireless surveillance network
Cons
- Susceptible to interference from other household devices, such as microwaves, cordless phones, video game controllers, and routers
Digital wireless cameras
Digital
Digital video
Digital video is a type of digital recording system that works by using a digital rather than an analog video signal.The terms camera, video camera, and camcorder are used interchangeably in this article.- History :...
wireless is the transmission of audio and video analog signals encoded as digital packets over high-bandwidth radio frequencies.
Pros
- Wide transmission range—usually close to 450 feet (open space, clear line of sight between camera and receiver)
- High quality video and audio
- Two-way communication between the camera and the receiver
- Digital signal means you can transmit commands and functions, such as turning lights on and off
- You can connect multiple receivers to one recording device, such as security DVR
Uses and Applications
Wireless security cameras are becoming more and more popular in the consumer market. They are a cost-effective way to have a comprehensive surveillance system in your home or business without needing an expensive installation. Wireless cameras are also a great for people renting homes or apartments. Since there is no need to run video extension cables through walls or ceilings (from the camera to the receiver or recording device) one does not need approval of a landlord to install a wireless security camera system.A wireless security camera is also a great option for seasonal monitoring and surveillance. You can observe your pool or patio in the summer months and take down the camera in the winter.
Wireless range
Wireless security cameras function best when there is a clear line of sight between the camera(s) and the receiver. Outdoors, and with clear line of sight, digital wireless cameras typically have a range between 250 to 450 feet. Indoors, the range can be limited to 100 to 150 feet. The signal range varies depending on the type of building materials and/or objectsthe wireless signal must pass through.