With the popularity of mobile phones, the demand for signal jammers in various conferences and examinations has also increased significantly. Therefore, signal jammers naturally have a broad market. However, the vast majority of customers lack sufficient understanding of signal jammers, and they often unilaterally choose high-power signal jammers to achieve good results. They do not know that this has caused some hidden dangers.

Generally, in general examinations and small courses, selecting a low-power Signal Jammer can obtain good results. However, we have noticed that many schools and important conferences tend to pursue high-power signal jammers. For example, a high-power signal jammer is installed in each classroom, and after the examination, due to the lack of attention to the use, a few shielding devices are often not closed in time, and they are continuously turned on for several weeks. Therefore, I hope that the unit that needs to use the Signal Jammer: do not blindly select the high-power Signal Jammer. For a classroom, It is sufficient to select a shielding device with low transmission power to achieve the shielding effect. After use, please close the shield in time to avoid continuous radiation. It is also necessary to choose the shields produced by regular manufacturers. The shields produced by non regular manufacturers often deliberately increase the transmission power in order to achieve good shielding effect.