Can wireless jammers block surveillance cameras?
We often encounter customers asking us: May I ask if your product can block cameras? I need to purchase a wireless jammer to block surveillance cameras. When encountering such a question, we really cannot give an immediate answer. We must first ask the customer: What is the signal transmission method between the target object you need to block, which is the surveillance camera, and the main control terminal of the monitoring system? That is to clarify whether the signal is transmitted through video cables or through wireless communication technology between the two. So the customer's question : Can frequency interference wireless interference function block monitoring transmitted through cables?
The answer to this question is very clear: wireless jammers can only be used to block wireless signals, and transmission through wired cables does not work. Only audio and video signals and surveillance cameras using wireless transmission can be effectively blocked.
The vast majority of surveillance cameras using wireless communication technology use 4G or 5G data communication services such as WiFi 2.4G, WiFi 5.8G, or mobile SIM cards. There is also a small portion that uses unconventional frequencies such as 433MHz and 1.2G for wireless data transmission. However, regardless of which frequency or frequency band is used, mobile jammers can be equipped with targeted shielding modules to effectively shield these wireless communication frequency bands. This is absolutely free from technical obstacles and difficulties.
However, if the surveillance camera is connected using cables, especially if these cables are often wrapped in shielding material, then the wireless jammer cannot play a shielding role against such wired cables. However, there is an exception: if the wireless jammer is placed close to the surveillance camera, or if the antenna of the wireless jammer is placed next to these communication cables, sometimes it may be observed that even the audio or video signal transmitted through the cables is still subject to interference, but the performance of this interference is not uniform and stable, such as screen shaking, blurring, or flickering, audio tone change, etc. In extremely severe cases, complete disappearance of images and indistinguishable audio may also occur, depending on factors such as the power of the wireless jammer and the distance between devices and wires. And this interference phenomenon cannot be called complete shielding, it belongs more to the category of electromagnetic interference.
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