Important Considerations for Installing Cell Phone Jammers in Examination Halls

Ensuring Effective and Safe Installation of Cell Phone Jammers in Examination Halls

In recent years, with the promotion and construction of standardized examination halls, Cell Phone Jammers have become essential technological security products for examination halls. These jammers are now installed in each examination room using a fixed installation method, eliminating the need for temporary distribution and centralized collection during exams. However, once Cell Phone Jammers are permanently installed in examination halls, what are the important considerations to keep in mind?

Installation Positions in Examination Halls

Examination halls consist of several classrooms, and the installation positions for Cell Phone Jammers within these classrooms usually include the following: above the front blackboard, on both sides of the blackboard, on both sides of the back blackboard, and on the relatively central position of one side wall. Regardless of the chosen position, the following considerations should be taken into account:

  1. Installation Height: The installation height should ideally exceed the height of a person raising their arm, specifically not less than 2 meters. There are two reasons for this. Firstly, it ensures that the signal emitted by the Cell Phone Jammer can propagate throughout the classroom without encountering any obstacles. Secondly, it helps prevent intentional tampering or damage to the jammer.
  2. Power Supply: The power supply line for the Cell Phone Jammer should adhere to standard electrical operation standards. It is necessary to add protective conduit to the power supply line. Randomly connecting a power supply line is strictly prohibited. The connection point of the power supply line should be properly insulated and protected.
  3. Multimedia Devices: In classrooms equipped with digital multimedia teaching devices, especially those using wireless mice during computer-based instruction, it is recommended to replace wireless mice with wired ones. This is because most Cell Phone Jammers currently available have the capability to block wireless Wi-Fi and Bluetooth signals. If wireless mouse operation is required during the exam, the signal jamming effect may prevent normal mouse operation.
  4. Distance from Audio Equipment: Examination halls generally have microphones and speakers installed. When selecting the installation position for Cell Phone Jammers, it is important to maximize the distance between the jammer and the microphones and speakers. This is because once the Cell Phone Jammer is powered on, there will be a certain level of electromagnetic radiation within a range of one to two meters around its transmitting antenna. This radiation may have a negative impact on the normal operation of the aforementioned equipment.


Installing Cell Phone Jammers in examination halls is crucial for maintaining a fair and secure testing environment. By considering the installation height, power supply standards, compatibility with multimedia devices, and distance from audio equipment, examination authorities can ensure the effective and safe operation of these jammers. These considerations will contribute to the overall success of standardized examination projects and help prevent cheating through unauthorized mobile phone usage.