Many exams and other departments need wifi jammer to prevent communication equipment from contacting the outside world, which can better prevent cheating, so there are also many electronic devices for shielding signals. How much do you know about the tricks for blocking wifi signals?
1. Wifi signal jammer
A good wifi jammer device can effectively shield GSM (China Mobile, China Unicom), PHS (Telecom PHS), DCS (1800MHz), PCS (1900MHz), CDMA (China Unicom), SCDMA (China Unicom), all 3G, 4G, WiFi, and other wireless signals can also block some walkie-talkies according to customer needs, which can be said to be very good.
2. Signal shielding cabinet
Although the shielding cabinet can play a better shielding effect. Nowadays, mobile phones are becoming more and more intelligent, and food, clothing, housing, and transportation can be solved on mobile phones. We can no longer live without mobile phones. When we are away from home, mobile phones can solve many troubles for us. Of course, there is a lot of important information on everyone's phone. When taking an exam or in a special place, you will want to block the signal. At this time, mobile phone signal blocking is a good choice, which can not only host the mobile phone but also ensure the security of mobile phone information. Killing two birds with one stone, but the signal shielding cabinet has the disadvantages of being high cost and being inconvenient to carry.
The signal shielding cabinet is very impractical in large exams or when there are too many people. You can only choose a wifi frequency jammer, which is effective and economical. Jammer mart is a good electronic technology company. It mainly produces electronic equipment such as shielding instruments. It has many years of experience and light technical support. The big brands are trustworthy.
