We often encounter customers asking us questions: Can your products block cameras? I need to buy a Wireless Signal Jammer to block surveillance cameras. When we encounter such a question, we really can't give an answer immediately. We must first ask the customer: the target object you need to block, that is, the surveillance camera, how is the signal transmitted between it and the main control end of the surveillance system? ? That is to say, it is necessary to understand whether the signal is transmitted through the video cable or the wireless signal is transmitted through wireless communication technology. So the customer's question came up: Can the wifi signal jammer block the monitoring transmitted through the cable? Large Battery Handheld 8 Band Cell Phone GPS WIFI DCS PCS Signal Jammer The answer to this question is very clear: the wifi signal jammer can only be used to shield wireless signals and does not work for wired cable transmission. Only audio and video signals and surveillance cameras that use wireless transmission will be effectively shielded. The vast majority of surveillance cameras that use wireless communication technology use WiFi2.4G, WiFi5.8G or mobile phone SIM cards for 4G and 5G data communication services. A small number of them use unconventional frequencies such as 433MHz and 1.2G. Wireless data transmission, no matter which frequency or frequency band is used, the wifi signal shielding device can be equipped with a targeted shielding module to achieve effective shielding of these wireless communication frequency bands. There are absolutely no technical barriers or difficulties. However, if the surveillance cameras are connected by cables, especially if these cables are often wrapped with shielding materials, then the wireless signal shielding device cannot play a shielding role for such wired cables. But there is an exception: if the wifi Signal Blocker is placed close to the surveillance camera, or the antenna of the wifi signal jammer is close to these communication cables, sometimes even the audio or video signals transmitted through the cables will be observed. , there will still be some interference, but the performance of this interference is not uniform and stable, such as picture jitter, blur, or flickering, audio tone changes, etc. In extremely serious cases, the image may disappear completely and the audio may become indistinguishable. This mainly depends on the power of the wifi signal jammer and the distance between the equipment and wires and other conditions. Moreover, this interference phenomenon cannot be called complete shielding. It belongs more to the category of electromagnetic interference.
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Can a wifi signal jammer block monitoring transmitted through cables?
Posted 2023-10-20 09:48:36
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