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Can the wireless signal jammer block the surveillance camera?

Perfectjammer
2023/04/25

Can your product block the camera? I need to buy a wireless signal jammer to block the surveillance camera. When encountering such a problem, we cannot immediately provide an answer. We first need to ask the customer: How does the target object you need to block, which is the surveillance camera, transmit signals to the main control end of the monitoring system?? By using wireless communication technology between the two, identify whether the signal is transmitted through video cables or wireless signal transmission. So the customer's question came up: Can the wireless signal shielding device block the monitoring of wired transmission?

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The answer to this question is very clear: wireless signal shields can only be used to block wireless signals and have no effect on the transmission of wired cables. Only surveillance cameras that use wireless transmission of audio and video signals can be effectively shielded.


The vast majority of surveillance cameras using wireless communication technology use 4G and 5G data communication services such as WiFi 2.4G, WiFi 5.8G, or mobile SIM cards, with a small portion using unconventional frequencies such as 433MHz and 1.2G. Wireless data transmission, but regardless of which frequency or frequency band is used, wireless signal shielding devices can be equipped with targeted shielding modules to achieve effective shielding of these wireless communication frequency bands. There are absolutely no technical obstacles or difficulties.

However, if the surveillance camera is connected through cables, especially if these cables are often wrapped in shielding materials, the wireless signal shielding device cannot shield such wired cables. But there is one exception: if you place the wireless signal blocker close to the surveillance camera or place the antenna of the wireless signal blocker next to these communication cables, sometimes you may even observe some interference in the audio or video signal transmitted through the cable. However, the performance of this interference is not uniform and stable, such as picture shaking, blurring or flickering, changes in audio tone, and so on. In extreme cases, the image may completely disappear, making it difficult to distinguish between audio, etc. This mainly depends on the power of the wireless signal shield and the distance between the device and the wire. And this interference phenomenon cannot be called complete shielding, it belongs more to the category of electromagnetic interference.