Because mobile phones have the functions of transmitting information, video, recording, etc., it is very likely to cause the leakage of important information of the country and related institutions. Many agencies have taken measures, such as installing radio frequency jammers, to protect their own interests. Then in some places where information must be kept strictly confidential, such as government agencies, banks, examination rooms, etc. The most common contact is the examination room. Basically, every school will install a radio frequency jammer to prevent candidates from cheating. During the final period, college entrance examination and other examinations, as long as the mobile phone enters the shielded area, the signal will not be received or the signal will be lost. The signal is very weak. In addition to these places, radio frequency jammers are also installed at gas stations, because gasoline is very volatile, and there are many gasoline molecules mixed in the air at gas stations, so sparks from open flames or other substances will cause explosions , And the internal parts of the mobile phone we use sparks when we make a call or send a message, causing a fire at the gas station.
The radio frequency jammer can generate specific electromagnetic signals, restricting the use of mobile phones in the designated shielding area. Installing the radio frequency jammer can avoid the interference of mobile phone noise, and can also prevent the occurrence of leaks and crimes. The important thing is that it plays a very important role in maintaining national security and protecting people's lives and property.