Usually, the smallest area of ​​cell phone signal jammer is tens of meters around. If there are enough signal blockers, the largest one is unlimited. Otherwise, how can the detention center reach all signal blocking|

The area of ​​our cell phone signal blocking depends on the area of ​​your FM. Generally, one type of housing of 120 square meters is enough. Electronics has a variety of signal blockers. You can also go to learn about it.

The area of ​​our cell phone signal blocking is based on the power of the signal blocker. As long as the local environmental signal strength is different when testing the application site, if the indoor signal is weak, the area is large. If there are GSM communication signal towers or something in the outside world, then the GSM signal jammer is close in the outside area!

The actual analysis shows that when our mobile phone signal blocking works, as long as the improper setting causes the transmission power to be too large, in a small area of ​​the multi-functional hall, teachers and other storage areas, the electromagnetic waves are superimposed in the narrow and long area space, and reflected multiple times through the walls, ceilings and ground that were originally separated from the outside, the people in the room will be in a more serious electromagnetic pollution. According to the survey, the college entrance examination and the high school entrance examination are the occasions where our mobile phone signal shielding is used the most. In some examination rooms where our mobile phone signal shielding is used, the key parties (college entrance examination inspectors, candidates and teachers) are irritable and unable to concentrate, and some candidates even have headaches. Various signs indicate that if the transmission power of our mobile phone signal shielding is too high, it will seriously affect the normal thinking of the candidates in the examination room.

When it is really necessary to use a jammer, try to use a low-power mobile phone signal shielding. If it can solve the problem at one time, do not set up multiple units. The lower the installation position, the better. Do not hang it above people's heads, which is very detrimental to human health. Our cell phone signal shielding, which we set up during the provincial agricultural modernization work conference, was placed in the flowers on the ground beside the wall of the multi-function hall. It not only achieved the desired effect, but also did not affect the beauty of the venue. It can be said to be the best of both worlds.