The mobile phone signal jammer interferes and covers the radio signal by transmitting high-power multi band radio waves. It is usually used to interfere with the frequency of the remote-controlled explosive device at the explosive disposal site, so that the explosive device cannot be detonated. At present, the rapid development of wireless network has not only brought great convenience to people's life, but also brought many new challenges to the disposal of major police cases. The application of mobile phone signal jammer is essential.

Convenient communication contributed to large-scale illegal gathering events. At first, there were not many people gathered, and the mood of the on-site personnel was not very intense. With the passage of time, many people contacted the outside world through telephone or mobile network. In addition, with the increase of the on-site onlookers over time, the mood of the personnel was very easy to be incited, and the scene became difficult to control. At this time, starting the mobile phone signal jammer to control the on-site communication signal can effectively reduce the gathering of personnel and shorten the residence time of on-site personnel, which is of great benefit to the disposal of the police.

There is no trivial matter in explosion related cases. The public security organ is equipped with mobile phone signal jammer. The most essential purpose is to prevent the threat of remote-controlled explosive devices. With the full roll out of 5g network, the data traffic charges of major operators are reduced, and various video communication software and video live broadcasting platforms are rising rapidly. These software not only bring convenience and entertainment to people's life, but also bring varying degrees of interference to the law enforcement activities of public security organs. In the city's major cases, it is difficult to ensure that the outer seal is not left behind. In some cases requiring police to take measures to attack, the live broadcast is easily seen by suspects. Even the illegal elements reveal the police's action plan to the suspect through instant video communication, which brings great passive action to the police. The use of on-site Mobile Phone Signal Jammer made the police surprise action more sudden and successfully avoided the occurrence of dangerous situations.