With the advent of the communication era, the use of mobile phones, PHS, wireless phones and other mobile communication devices has enriched people's daily life and greatly promoted the development of social economy. At the same time, the uncontrolled use of mobile communication devices such as mobile phones is a headache for other examination, private places and confidential units. The use of mobile phone jammer can shield the mobile phone signal, which has solved the problems caused by using mobile phones.

Nowadays, small communication equipment has become a eavesdropping tool. When someone maliciously uses it to access important lectures and conferences, financial places and secret related organs and units, it will cause the leakage of important documents and private information. Similarly, the use of mobile phones and other mobile communication devices to query the answers and transmit information online in the examination has seriously damaged the order of the examination room and affected the fairness of the examination. More seriously, criminals also use mobile phones and other communication devices to commit crimes, causing social panic and so on.

In any case, the use of communication equipment is often inseparable from the signal. The mobile phone jammer mainly solves the problems caused by mobile communication equipment such as mobile phones. The mobile phone jammer uses new technology to interfere with the signals in the protection area, so that the mobile phone loses its communication function, and kills these problems in the cradle, such as cheating on the exam and divulging the content of the meeting.