Was To Build A Box To Block Cell Phone Signal Will Not Cause Harm To The Human Body

Perfectjammer 2022/04/30

The mobile phone shielding device installed in the test center is mainly to prevent candidates from cheating through various high-tech communication methods. Except for the 2/3/4/5G signals of mobile phones, signals such as WiFi signals, Bluetooth, walkie-talkies, and conductive headphones must be shielded. The second is the effective shielding distance. For the standardized test room, at least one Was To Build A Box To Block Cell Phone Signal must be installed in one classroom of the test room. This shielding device needs to be able to block the wireless signal of the entire test room, so the effective shielding distance should be more than 10 meters. However, the effective shielding distance of the signal jammer has a certain relationship with whether there is a signal tower near the test room, and the distance from the signal tower. At the same time, when using cell phone jammer , it is best not to disturb the normal life of surrounding residents, so the choice of mobile phone signal jammer with high power and shielding distance depends on the specific situation of the examination room. Then the stability of the shielding effect must be guaranteed to be shielded throughout the examination process, and there can be no intermittent situations. Finally, it is best not to disturb the examinees who are taking the exam when the shielding device is working, which requires the shielding device to be silent and low-noise or even produce no noise at all. At the same time, it is also required that the radiation level of the shielding device meets the safety standards required by the state, and will not cause physical damage to the invigilator and candidates.

The conference room space of 200 square meters is not too big or too small. According to the coverage radius of the commonly used low-power mobile phone signal jammers, if you want to use only a small Was To Build A Box To Block Cell Phone Signal to shield the mobile phone signal, the shielding effect will generally not be achieved. Require. The reason is: the cheap low-power models of mobile phone signal jammers basically use omnidirectional antennas. During the actual installation process in the conference room, the mobile phone signal jammer cannot be installed in the center of the venue, but installed At both ends or both sides of the venue. Then, a considerable part of the distance that shields the mobile phone signal will be blocked by the wall and can only be wasted. If you consider the influence of the distance of the base station around the conference room or if there are indoor signal amplifiers installed in the building, the number of mobile phone signal jammers required is generally 2-4 units. They are installed at the front and rear ends of the venue or symmetrically on both sides of the venue, which can basically ensure the signal shielding effect in the 200-square-meter conference room.

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