We all know that cheating in school exams is very common. With the development of science and technology, various exam cheating tools have appeared one after another. In addition to our most common cell phones, such as wearing special glasses, cheat headphones, cheat pens, etc. are very common, and even some applicants install a full set of cameras on drink bottles. The system is truly amazing. Now Phone Jammers can be installed in the test room to prevent cheating during the exam, thus maintaining the fairness of the test room. field tools to be in a network-free state, thus avoiding the occurrence of source test cheating.
There are many applications for signal jammers in the market. Conference rooms can use Cell Phone Jammers to prevent unnecessary ringing during conferences. Teachers can use wifi jammers to allow students to drop their phones during lessons and exams. Next, what frequency bands will specifically signal jammers to interfere with? how to make a cell phone jammer?
In general, standard Cell Phone Jammers can emit radio waves that interfere with or prevent the phone from receiving the required GSM radio signals. Some models not only interfere with cell phone signals, but also block GPS and WLAN signals. , the cell phone jammer will send its own radio waves to intercept the signal reception.Before buying a cell phone jammer, to see the signal band that the jammer blocks. to use, usually connected to the antenna, plugged into the power supply, and can work normally, which is very convenient. However, please be aware that purchases should be used for legitimate purposes, not for illegal purposes.