• 2024-07-14

Communication electronic devices inevitably leak confidential information through network servers, and the emergence of some shielding devices is mainly used to prevent cheating in school examination rooms. Of course, the emergence of mobile phone blocking devices is not only due to these reasons, b...

• 2024-07-14

Usually, when people make phone calls with their mobile phones, they convert all the operations on the phone into data, and then transmit the data through electromagnetic waves. Electromagnetic waves associate mobile phones with signal base stations within a certain frequency range, and then complet...

• 2024-07-14

In some important exam projects in certain countries, efforts will definitely be made to install devices that block and interfere with signals. However, in practical use, it may be found that sometimes the interference effect of the signal jammer in the examination room is not ideal after it is turn...

• 2024-07-12

As a portable and multifunctional wireless communication jamming device, portable signal jammers have demonstrated their unique value and role in various fields of modern society. Here are some places where portable signal jammers may be used and their detailed explanations: 1、 Government agencies a...

• 2024-07-12

When choosing a high-power signal jammer, relying solely on its appearance often cannot confirm the quality of the jammer, and people are worried about buying a low-quality jammer. Here is how to distinguish the quality of a high-power signal jammer. The most intuitive way to distinguish the quality...

• 2024-07-07

In daily life, mobile phones are essential and can be found in various occasions such as scanning codes, making payments, chatting online, etc. However, compared to some mobile phone signal blocking requirements, the demand has gradually increased. When using a signal blocking device, one can deal w...

• 2024-07-07

Nowadays, almost every person has a mobile phone, which enables communication between two distant places. And in some places, there are derivatives of signal shielding products that do not require this. How these products interfere with communication signals? Firstly, it is necessary to understand h...

• 2024-07-07

Exam shielding devices are generally connected to base stations by intercepting electromagnetic waves and signals emitted by mobile phones. Interrupted communication between mobile phone and signal base station. The screening device in the examination room will emit random static electricity or nois...

• 2024-07-06

To make a signal jammer malfunction, the first thing to know is the working principle of the jammer.  How does a signal jammer make a phone lose signal. Can it malfunction without damaging the signal jammer? The principle of a jammer is to emit white noise interference signals with the same fre...

• 2024-07-06

In order to avoid interference from other factors during meetings and prevent the leakage of meeting content, using a mobile jammer is a correct choice. Mobile jammers suitable for use in conference rooms are mainly divided into built-in antennas and external antennas on the market. Therefore, shoul...