Can Signal Jammers Block Wired Surveillance Cameras?

In today’s technologically advanced world, concerns about privacy and security have become increasingly prevalent. As a result, many customers inquire about whether our products can block surveillance cameras. However, providing a straightforward answer to this question is not as simple as it may seem. To determine whether our Signal Jammers can effectively block surveillance cameras, it is crucial to understand the method through which the cameras transmit signals.

Understanding the Transmission Method:

When customers ask about blocking surveillance cameras, it is essential to inquire about the method of signal transmission between the target object (the camera) and the control terminal of the surveillance system. This helps us determine whether the signal is transmitted through video cables or wireless communication technology.

Signal Jammers and Their Effectiveness:

Signal Jammers are designed specifically to block wireless signals. They are effective in blocking audio and video signals transmitted by wireless surveillance cameras. Most wireless surveillance cameras utilize WiFi frequencies such as 2.4GHz or 5.8GHz, or data communication services provided by mobile SIM cards, such as 4G or 5G. Some cameras may also use unconventional frequencies like 433MHz or 1.2G for wireless transmission. Regardless of the frequency or band used, Signal Jammers can be equipped with targeted blocking modules to effectively block signals within these wireless communication frequencies. This can be achieved without any technical obstacles or difficulties.

Limitations of Wired Surveillance Cameras:

However, if the surveillance cameras are connected through cables, especially cables with shielding materials, Signal Jammers cannot effectively block them. Wired surveillance cameras, which are often encased in shielding layers, are not affected by Signal Jammers. It is important to note that there is one exception to this rule. If the Signal Jammer is placed in close proximity to the surveillance camera or if its antenna is positioned near the communication cables, some interference may occur. This interference can manifest as image shaking, blurriness, flickering, or distorted audio. In extreme cases, the image may completely disappear, and the audio may become indistinguishable. The severity of these interference effects depends on factors such as the power of the Signal Jammer, the distance between the equipment and cables, and other environmental conditions. However, it is crucial to understand that this interference phenomenon cannot be considered as complete blocking; it falls more within the realm of electromagnetic interference.


In conclusion, Signal Jammers are effective in blocking wireless surveillance cameras that utilize WiFi or mobile data communication frequencies. However, they are not capable of blocking wired surveillance cameras that rely on cable connections. While some interference may occur when Signal Jammers are placed in close proximity to wired surveillance cameras, this interference cannot be considered as complete blocking. It is important for customers to understand the limitations and capabilities of Signal Jammers before making a purchase decision.