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How Do Wireless Surveillance Cameras Work

When surveillance cameras first come out, it needed to be connected to an electrical source to work. These types of cameras rely on cables to transmit signals to a viewing device. Prior to this, having surveillance cameras used to be a hassle with long and obtrusive wires snaking around your home.


But these old days are gone. With the rise of the best cctv cameras and the introduction of wireless cameras, cables are no longer a problem. Video and audio signals are transmitted via the Internet and other wireless networks to the receiver, which is connected to a viewing and recording device.


Today, many people are using wireless surveillance cameras in their homes and business establishments. How does it work? Wireless surveillance cameras have a lot of benefits, but they also come with limitations. They are in great demand nowadays. Still, customers can catch some good deals and promotions with CCTV Systems for sale in Singapore.


Wireless surveillance cameras power source


Running a wireless security system constantly requires a lot of power, and there are two main power sources for these systems. One is an electrical source, cameras that use this type of power source are still wireless because they transmit signals wirelessly. Second is using batteries. Cameras with this type of power source are usually used in locations where an electrical source is not available. But the downside is that the batteries need to be constantly replaced to keep the camera working.


Types of wireless surveillance camera and how do they work




Wireless Analog cameras transmit video and audio signals using radio frequencies. It mainly uses three frequencies, which are 900 MHz, 2.4 GHz, and 5.8 GHz. Nowadays, the majority of wireless surveillance cameras operate on 2.4 GHz. The disadvantage of using this type of camera is that it tends to pick up more interference. Also, due to its lessened security, its signal can be picked up with a receiver that is tuned to its frequency.




These cameras transmit encoded video and audio analog signals. This is because of the digital packets sent over high-bandwidth radio frequencies. These cameras adjust their frequencies, thus, tuning into its signals are harder. Correctly pairing your receiver with the camera is needed, so that the two are always on the same frequency.


Wireless range


A clear line of sight is necessary between camera(s) and the receiver for wireless surveillance cameras to function best. With a clear line of sight, digital wireless cameras normally have an outdoor range of 250 to 450 feet, but the range is limited between 100 to 150 feet indoors. Glass, windows, drywall and cubical walls normally don’t weaken signal strength. Concrete floors and Brick are the culprits that disrupt signals. Additionally, trees that are in the line of sight between the camera and receiver could impact signal strength.



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