The current communication technology is also developing rapidly, which shortens the distance between people, but also brings great difficulties to the communication security work. Some mobile phone eavesdropping, leakage of secrets, cheating in the examination room, and major explosions in gas stations. What is more terrible is that the prison inmates can command their external criminal associates to continue to engage in illegal activities from their restricted prison room by using mobile phones. The degree and seriousness of the harm have aroused great attention in various places.

The mobile phone jammer is a product developed according to the needs of the market. It adopts advanced shielding technology and is mainly used in major universities, conference rooms and prisons. Within a certain range, it releases a communication interference signal that can completely cover and shield the mobile phone. All electronic communication devices such as mobile phones within the working range of mobile phone jammers will be in a network free state. Since the current communication equipment obtains external information by means of signal transmission, the transmitted and received signals are an indispensable process, and the mobile phone jammer completely interferes with this wireless signal, so the communication equipment can not continue to be used. So as to achieve the purpose of mandatory prohibition of mobile phones, completely solve the various hazards brought by mobile phones, so that people can not only enjoy the convenience brought by high technology, but also do not cause interference to the surrounding environment.