The use of mobile phones, PHS, wireless phones and other mobile communication devices has improved our communication efficiency in ordinary times, making the whole society enter the information age. But there is also a bad side. The uncontrolled use of mobile communication devices such as mobile phones is a headache in some examination environments, private places and confidential units. Now, the use of signal jammers can shield mobile phone signals, which can solve the problems caused by mobile phones in some specific environments.

Nowadays, smaller communication instruments are used as eavesdropping tools. When someone maliciously uses them to access important lectures and meetings, financial places and secret related organs and units, important documents and private information will be leaked. Similarly, the use of mobile communication devices such as mobile phones to query the answers and pass information on the Internet during 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.

In short, no matter what, the use of mobile phones and other communication devices is often inseparable from signals. Signal jammers are mainly based on this to effectively solve the problems caused by mobile phones and other mobile communication devices. The signal jammer uses new technology to interfere with the signals in the protection area, making the mobile phone lose the communication function, so as to put an end to cheating on the mobile phone in the examination and leaking the meeting content.