The electronic jammer is equipped to prevent candidates from cheating by using portable communication equipment. After the electronic jammer is protected, it will interfere with the transmission of communication signals, so as to prevent candidates from using communication equipment to violate rules. In addition to being used in school examinations, electronic jammers are also suitable for various places with wireless routers, laptops and desktops with wireless LAN cards. Computers and wireless routers can communicate directly, so there is a possibility of leaking secrets through wireless networks. At this time, the use of electronic jammers can provide security protection for fixed, mobile or temporary wireless LAN.

In order to realize the interference of the electronic jammer to the network, it is necessary to ensure that the signal field strength sent by the electronic jammer is greater than the field strength of the target interference area, and the interference location used should not be too close to the base station. The closer the distance to the base station, the stronger the field strength is, the smaller the effective interference area of the electronic jammer is. Therefore, attention should be paid to this when using. In this era of both functions and shapes, electronic jammers are high-tech products elaborately developed with advanced technology, and have practical functions and convenient design. It can isolate network signals within 10-60 meters, and also has a high degree of intelligence and ultra wide sweep interference, which realizes efficient shielding of ultra wide signals and ensures the safety protection of the required places.