When the church is praying, the priest is reading the Bible on it. Such a solemn moment, if suddenly a loud and loud cell phone alarm sounds, it will be a matter of anger and embarrassment. Although we all know that before we pray, we must turn our mobile phones, but there are always people who forget or like to do things that are contrary to us. At this time, even if the phone is turned off, it has no effect. You can use the wifi jammer to block the phone signal of the church for a certain period of time, so as to achieve the purpose of prohibiting cell phone noise.
During the school class, the students are always used to keeping their eyes on their phone and transferring their attention to the mobile phone. Unless the class is particularly interesting, the teachers are also helpless, especially during the examination, various cheating tools allow the invigilators to They are dumbfounded. What cheating glasses, watches, erasers, and even the bottle mouth are equipped with pinhole cameras, which seriously affects the fairness of the test. A portable wifi jammer can be placed in the classroom during the exam to block the cheating tool signals of the candidates.
The wifi jammer achieves the purpose of covering the original network by transmitting radio waves with the same power, thereby preventing a certain range of communication networks. The mobile phone cannot be in the normal Internet, talking, sending messages, that is, the mobile phone is in a "paralysis" state, and at the same time it could not affect the impact of other electronic devices. Once the phone jammer is turned off or the phone is turned away, the communication device will return to normal.
Wifi signal jammers are widely used, not only in churches, classroom test rooms, but also in conference centers (to prevent mobile phone communication disruption meetings), theaters (to prevent cell phone noise from affecting theater screenings), and other prisons and other such as government, military bases, etc. Preferred interference device. In the Iraq war, it was because Iraqis used electronic jamming instruments to disrupt the US military's radar detectors, making it a "blind" in certain areas within a certain period of time.
wifi blockers can not only block cell phone signals, but with the power of mobile phones and the rapid development of science and technology, the design of jammers has become more diverse. Without the bulkiness and small size of the past, the current wifi jammer is not only small in size, cheap, and can be carried around, but also selectively interferes with 2G 3G 4G GPS UHF VHF and other frequency bands, with powerful functions and wide shielding range. When we purchase the jammer, we need to pay attention to the interference band and the blocking radius, and choose according to your needs.