Mobile phone signal jammers are mainly used in some school examination rooms, dormitories, detention centers, troops and confidential meeting rooms, etc. Therefore, as long as you enter these places, your mobile phones will be blocked, and you will not be able to receive calls, receive text messages, and access the Internet normally. Without exception, nothing can be set to avoid being blocked. Important admission exams, qualification exams, or final exams need to be installed Car Cell Phone Signal Jammer to shield the electronic signals around the exam room and prevent possible electronic cheating. So, how much area can the mobile phone signal jammer in the examination room shield? Can only one mobile phone jammer be used in an examination room to achieve the purpose of shielding? How many cell phone jammers should be used in a teaching building? cell phone jammer
First of all, we need to know: The mobile phone signal jammer in the examination room has a theoretical shielding range, which is about 0-20 meters in radius. But please note that this is a theoretical distance. The actual effect should be combined with the local signal strength, especially whether there is a signal base station nearby. If there is a signal base station within 200 meters, the shielding effect will be compromised. In addition, the wall will also weaken the shielding effect of Car Cell Phone Signal Jammer . As the signal is stronger near the window, the shielding effect will be weakened. Party and government agencies, corporate party and government agencies, enterprises, etc. also have a demand for mobile phone signal jammers. The frequency of meetings of party and government agencies, enterprises, etc. can be said to be very high, and in order to allow participants to focus more on the meeting and to learn the spirit of the meeting more in-depth, it is necessary to prevent the use of mobile phones. When the leader was in the meeting, he turned on the mobile phone jammer to shield the cell phone signal. The leader spoke happily and listened carefully.