However, because the shielding effect of mobile phone jammers is limited, it is generally within a radius of 0 to 50 meters, and the area is about 250 square meters. Within this range, it can be guaranteed to isolate the communication signal and WIFI. Signal, but when installing Car Cell Phone Jammer Law in the test room, pay attention to avoid covering it with metal objects, because this will seriously affect its shielding effect, and because the shielding effect will be greatly reduced as the wall is penetrated, it is best to use it At this time, it is ensured to be in the open area, so as to ensure the maximum effect of the mobile phone jammer. If you feel that the lower Power is not suitable, you can also choose a higher Power . cell phone jammer This product can be used in very good businesses. Find products made by very Powerful manufacturers. The very Powerful mobile phone jammers approved by the relevant state departments are very safe to use. This is a very good product.
Now that the college entrance examination is coming soon, many candidates have tried their best to review, intending to have a good level of performance in the college entrance examination. However, at this time, there are some candidates who did not spend their energy on learning. In order to maintain the normal order of the exam and to protect the interests of other candidates, more and more schools are now getting “black technology” from various channels, trying to cheat in the exam. In the face of this situation, in order to maintain the normal order of the exam and to protect the interests of other candidates, more and more schools are now I started to buy Car Cell Phone Jammer Law as a means to maintain order in the exam room, as a countermeasure in the exam, and what is the principle of mobile jammer?
