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Guide to Wireless Security Camera Frequencies

April 29, 2024

Mammoth Takeaways

  • The 2.4 GHz radio wave band is popular for security cameras because it offers a balance of range and bandwidth, allowing for decent video transmission over moderate distances. The trade-off is that the 2.4 GHz band is so commonly used that it’s vulnerable to interference and bandwidth crowding.
  • The 5 GHz band offers faster data transmission rates and clear video footage, but it’s less effective at long-distance transmission and penetrating walls.
  • The 900 MHz band is ideal for covering large areas and providing connectivity where detail isn't a priority. This frequency weaves through obstacles and prioritizes distance over speed.

Did you know that around half a trillion dollars is lost every year in the U.S. to property crimes? That’s a big-picture statistic reported to the FBI, but when it comes to setting up a security system for your business or organization, the nitty-gritty details matter just as much as the big picture.

One wireless camera detail that often flies under the radar—despite playing a crucial role in the functionality and effectiveness of wireless security cameras—is the frequency they operate on.

But what are radio wave frequencies, and why do wireless security cameras use them?

Keep on reading to find out!

Understanding Frequencies

First off, why would a wireless surveillance camera use radio wave frequencies?

Graph of wireless frequencies and their associated technologies.

Well, in the simplest terms, wireless security cameras use radio wave frequencies to transmit video data through the air to servers, video recorders, or video management systems.

In contrast to wireless cameras, hardwired security cameras do not use radio wave frequencies to transmit data-containing signals through the air. Instead, they rely on physical cables to connect directly to a recording device or network.

Common Wireless Frequencies in Play

The 2.4 GHz Band: The Popular Kid on the Block

The 2.4 GHz band is like the high school quarterback—everyone knows it, and it's involved in just about everything.

From Wi-Fi routers to baby monitors, the 2.4 GHz frequency band is the jack-of-all-trades in the wireless world.

Security cameras love the 2.4 GHz band for its balance of range and bandwidth, allowing for decent video transmission over moderate distances.

However, its popularity is also its Achilles' heel, as it leaves devices vulnerable to delay and potential interference from other devices vying for transmission over the same bandwidth.

The 5 GHz Band: The Speed Demon

Then we've got the 5 GHz band, the sleek sports car of frequencies.

The 5 GHz band is all about speed and less about the scenic route. It offers faster data transmission rates for that crisp, clear video footage modern security personnel have come to expect.

But don't let the speed win you over too fast; it comes with a trade-off.

The higher frequency of the 5 GHz band also means it's not the best at long-distance transmission. In particular, it struggles to penetrate walls and obstacles as effectively as its 2.4 GHz counterpart.

The 900 MHz Band: The Long-Distance Runner

Taking a step back, the 900 MHz band is the marathon runner of the group, prioritizing distance over speed.

Sure, it's not the first pick for high-definition streaming, but it's a stalwart choice for covering large areas where detail isn't king and connectivity is the main concern.

Ultimately, the 900 MHz band’s ability to weave through obstacles makes it a reliable, if not glamorous, option.

Choosing Your Camera: Factors to Consider

Picking a security camera with the right frequency isn't about going with the crowd or selecting the shiniest option. It's about what works best for your specific needs.

Here are a few things to consider before selecting a wireless camera:

Range vs. Resolution: What's more important for your setup? Covering a wide area or getting crystal-clear images?

Your answer will point you toward your ideal frequency band. If crystal-clear images are the goal, consider 5 GHz cameras. On the other hand, if you need wide coverage without perfect details, 2.4 GHz and 900 MHz cameras are more likely to suit your needs.

Environment: The layout of your premises can significantly influence the effectiveness of your chosen frequency. Are your security cameras battling through walls and furniture, or is it more of an open-field scenario?

Interference: If you're in a tech-heavy area with lots of devices competing for airtime, leaning toward a less congested band, such as 5 GHz, could save you a lot of headaches.

Mammoth Security: Knows Cameras and Frequencies

Mammoth Security

It's a jungle out there, especially when it comes to picking the right frequency for wireless security cameras.

Whether you're leaning toward the popular 2.4 GHz for its versatility, the speedy 5 GHz for high-definition needs, or the reliable 900 MHz for its range, the team at Mammoth Security has the expertise to make sure your security system hits the ground running.

We're here to guide you through the entire process, ensuring that your surveillance setup strategically enhances the safety and security of your premises over the long term.

Give us a call or click on the contact. Let us answer your questions and set you on the path to streamlined and reliable security. And be sure to request a free site survey and security assessment from Mammoth Security.

We’ll walk through your site, spot your security vulnerabilities, and answer your questions or concerns.

Fret not. With Mammoth Security by your side, you're already on the right frequency.




Wireless security cameras use radio wave frequencies like the 2.4 GHz, 5 GHz, and 900 MHz bands to transmit video data. This choice of frequency can significantly affect the functionality and effectiveness of the cameras.

Wireless security cameras transmit video data to servers, video recorders, or video management systems using radio wave frequencies.

Hardwired security cameras do not use radio wave frequencies in the same way as wireless cameras. They rely on physical cables to connect directly to a recording device or network.

When choosing a frequency for security cameras, consider the range versus resolution, the environment of your premises, and the potential for interference from other devices.

Wireless security camera performance can be significantly affected by the choice of frequency, impacting signal quality, susceptibility to interference, and the ability to transmit high-definition video.

The 2.4 GHz band is vulnerable to interference in security cameras due to its popularity, which results in many devices competing for transmission over the same bandwidth.

The environment impacts the effectiveness of security camera frequencies by influencing signal penetration and transmission range, depending on whether cameras are placed in open fields or areas with many obstacles, like walls and furniture.

The trade-off when using the 5 GHz band for security cameras is faster data transmission rates for clearer video at the cost of reduced effectiveness in long-distance transmission and penetrating obstacles.

The 900 MHz band might be chosen for certain security camera systems to ensure reliable coverage over large areas where high-resolution detail is not the main concern.

Interference in wireless security camera setups can be minimized by selecting a less congested frequency band and considering the specific environmental conditions and layout of the premises.



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