How to detect signal jammer?
First of all, mobile phone signal jammers need to be plugged in, so you can observe whether there is such a device near the power socket.
In addition, the appearance of the mobile phone signal jammer is also quite special. When you see a metal device with 6-10 antennas as long as chopsticks, it also shows that this is a mobile phone signal jammer; some mobile phone signal jammers do not The antenna is a large box with a plastic shell, or it may be a shield.
Finally, observe the signal strength of the mobile phone. If the mobile phone has no signal or no service, and cannot make calls and surf the Internet, it means that a mobile phone signal jammer is installed.
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The device can also block GPS, WiFi and 2G, 3G, 4G cell phone signals. 18W high output power, interference range up to 40 meters. It is a very cost-effective interference device.
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A new type of 8-band portable jammer. It has a larger interference range. It can be hung on the arm, using a separate control button, you can select the frequency band to interfere.
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Portable black 4-wire WIFI GPS GSM jammer cover 20 meters
Using this 4-band jammer, you can effectively jam the signal from the mobile phone 2G 3G GPS WiFi. Very easy to carry and hide. It can work continuously for 1 to 3 hours.
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