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Can one mobile phone signal blocker in the examination room block one classroom?

Important entrance exams, qualification exams or final exams require the installation of mobile phone signal blockers in the exam room to block electronic signals around the exam room and avoid possible electronic fraud.

So, how much area can the cell phone signal blocker in the test room block? Can only one jammer in the examination room achieve the purpose of shielding? How many jammers should a school building use?

First of all, we need to know: the mobile phone signal jammer in the examination room has an actual shielding range, which is about a radius of 0-20 meters. But note that this is the actual interval. The actual effect depends on the signal strength in the field, especially whether there is a signal base station nearby. If there is a signal base station within 200 meters, the shielding effect will be reduced.

Since the signal near the window is stronger, the shielding effect is also weakened.

It can be placed at both ends of the classroom and can be shielded in a large area. Of course, this should be determined in conjunction with the power wiring. It is also rare to have a shield on the podium.

If it is a larger classroom or there is a base station nearby, you can place two jammers in each classroom, one at the back and one at the back. Due to the enhanced superposition of shielded signals, a better 1+1>2 effect can be achieved.

In addition, in order to ensure the shielding effect, another shielding installation can be installed every 10-20 meters in the corridor of the teaching building.

The current need to pay attention to is that the installation height of the shield is preferably 1.5-2 meters above the ground.