YIFA LIU

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The role of cell phone signal jammers in college entrance examination | #signal jammer #wifi #5g #4g #gms #gps

The role of cell phone signal jammers in college entrance examination

By using technical means such as mobile phone signal jammers and "mandatory" restrictions on cheating in exams for a certain period of time, we can gradually achieve a complete change in concepts, cultivate and improve people's awareness of integrity. When the social cred

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Four steps to teach you how to choose a mobile phone signal jammer | #signal jammer #wifi #5g #4g #gms、 #gps

Four steps to teach you how to choose a mobile phone signal jammer

So how should you choose a signal jammer? From the manufacturer's point of view, if you choose it improperly, it will easily cause the product to be returned or exchanged, or the installation will have no effect.

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What good properties should a signal jammer have? | #cell phone #signal jammer #wifi

What good properties should a signal jammer have?

In some places, signal jammers need to be used all year round. Therefore, the new signal jammer should have good weather resistance, be able to withstand the need for continuous operation all year round in harsh environments, and be waterproof, moisture-proof, corrosion-proof, pollution-pr

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What are the main problems of signal shielding instruments? | #signal jammer #wifi #5g #4g #gms

What are the main problems of signal shielding instruments?

Remember that signal jammers will not only block the audio and text on your phone, but also interfere with GPS, radar detection, and police equipment radar detection, which may cause more serious problems. For this reason, the US federal government prohibits the sale and promotion of signa

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Are signal jammers harmful to the human body? | #signal jammer #wifi #5g #4g #gms

Are signal jammers harmful to the human body?

Currently, the commonly used signal jammers on the market have effective frequencies: 869~894MHz; 825~960MHz; 1805~1880MHz and 1900~1990MHz, etc. The functional frequency range is CDMA800.GSM900.DCS1800.PCS1900. It can operate an area of 40 meters in diameter, using DC-DCSPWM to inpu

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