With the popularity of mobile phones, the demand for mobile phone signal blocking in various conferences, exams, etc. has also increased significantly. Therefore, cell phone signal jammers naturally have a wide market. However, the vast majority of customers lack sufficient understanding of mobile phone signal jammers, and often choose high-power jammers one-sidedly for the sake of good results, causing many hidden dangers.

The principle of the mobile phone signal jammer is to emit interference signals through broadband and interfere with the uplink signal of the mobile phone to achieve the function of blocking the operation of the mobile phone. Therefore it is itself a signal emission source. Since it is a signal emission source, there is naturally radiation. The current transmitter power of the jammer ranges from 1W to 480W according to the needs of use. How strong is this transmit power? For comparison, the maximum transmit power of a GSM mobile phone is 2W, and the usual transmit power of a GSM macro base station is between 20W and 40W. The transmitting power of jammers generally used for exams and conferences is between 10W and 60W.

Normally, for general examinations and small meetings, choosing a mobile phone jammer with a transmission power of 2W-10W can achieve good results. However, according to our investigation of major schools and important conference locations, many places often pursue high-power jammers one-sidedly. For example: a school with more than 20 classrooms installs a jammer in each classroom, and selects The transmitting power is 30W, and after the exam, due to the lack of attention to use, it often happens that a small number of jammers are not turned off in time and continue to transmit for several weeks. Especially in a certain elementary school, after a certain exam, the signal blocker continued to be turned off for 2 weeks. It was not until we investigated the scene that we found that the jammer continued to be turned on on the side of the podium in a classroom full of primary school students! This really made us break into a cold sweat!

Therefore, I hereby strongly appeal to all units that need to use mobile phone signal jammers:

1. Do not blindly choose a high-power jammer. For a classroom, choosing a jammer with a transmit power of 2W is enough to achieve the shielding effect.

2. After completing use, be sure to turn off the shield in time to avoid continued radiation.

3. Be sure to choose a jammer produced by regular manufacturers. Jammers produced by informal manufacturers often deliberately increase the transmission power in order to achieve good shielding effect.

For the health of you and your family, please forward it to the public, thank you!