Today's college entrance examination has come to an end, but every year, the content of "take the mobile phone to the examination room to release the examination" has caused heated discussions. The public is talking about whether the examination room has a hand-held metal detector and a signal blocker in the examination room? Why can I still bring my mobile phone into the examination room and use it to send messages?
The emergence of this problem, in addition to the examination room security problem, the examination room technical defense equipment may also have certain loopholes. Test room wifi jammer, metal detectors, wireless signal detectors and other equipment are essential equipment in the standard examination room. If the test room is equipped with a jammer, the mobile phone can still send information. Maybe the test room signal jammer does not effectively shield communication signals. It is because the accessory communication base station is relatively close, which leads to poor signal shielding and indirect shielding. Exam selection and purchase of test room signal jammers must choose the latest 5G version of mobile phone signal jammers The latest 5G signal jammers must include: 2G, 3G, 4G, 5G signal frequency bands and wifi2.4G, WIFI5.8 wireless signal frequency bands in order to achieve Good shielding effect. If the communication signal in the environment is relatively strong, a signal shielding device with higher power can be used to achieve a good shielding effect. Therefore, when purchasing a 5G mobile phone signal blocker in a standardized test room, you must look for a good brand manufacturer to ensure a better shielding effect and create a good and fair test room environment.