Why should the signal jammer in the examination room choose a built-in antenna?

With the continuous advancement of communication technology, mobile networks have undergone many upgrades, from the initial 2G network to the current 3G, 4G, and 5G mobile phone signal networks, and mobile phone signal blockers have also evolved.

Mobile phone signal blockers are mainly used in school exams, college entrance examinations, and places where mobile phones are prohibited. With the increase in the frequency band of the communication network, mobile phone signal blockers have also developed from the initial three-antenna design to more than eight antennas. The latest mobile phone signal blocker adopts a built-in antenna design.

The first advantage of the mobile phone signal blocker with a built-in antenna is its beautiful appearance, which meets the aesthetic standards of modern people.

Secondly, it is more environmentally friendly and safer. Traditional signal blockers use an external metal shell, which is prone to high temperatures of 50-60 degrees Celsius when used for a long time, posing a safety hazard. The electronic built-in antenna mobile phone signal blocker uses a plastic shell, which effectively solves this problem. The best Cell Phone Jammer and wifi jammer.

Third, the built-in antenna blocker is portable, practical, and has a low maintenance rate. In the past, blockers with external antennas often had problems such as antenna loss and damage. The built-in antenna blocker integrates the transmitting antenna and power supply in the shielding shell. This design simplifies use and is easy to carry. When it is needed, the user only needs to turn on the jammer power supply to work normally. After use, there is no need to disassemble the antenna, just turn off the power supply. The use efficiency is greatly improved and the maintenance cost is reduced.

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