Whenever the college entrance examination, middle school entrance examination or college English CET 4 and CET 6 test, the signal jammer in the examination room, as an important tool to maintain the fairness of the examination, ensure the stability of the examination room and prevent candidates from cheating, will work throughout the entire examination process. However, there are still a small number of people who, out of personal desires, try to avoid the protection measures of the examination room, and even resort to some extreme sabotage. So how can the signal jammer in the examination room prevent sabotage?

Usually in the process of various types of exams, when the competent unit of the exam uses the signal jammer in the exam room, there are two ways. The first is to use a desktop jamming device, which is distributed to the invigilator before the exam or distributed to each Exam classrooms will be collected after the exam is over. This method will bring some problems: the process of issuing and recycling signal jammers in the examination room is time-consuming and labor-intensive, and the installation and use are more casual. Some invigilators place the equipment directly on the podium, while others On a stool or on the ground, because the interference device must be powered on before it can be used, the AC power cord needs to be used to connect the device host to the power outlet, so this method is very irregular. There is also a very critical point: the process of frequently issuing and recycling signal jammers in the examination room will inevitably cause damage and damage to the equipment.

Another way is to use a wall-mounted test room signal jammer, which means that the jamming device is installed in the test classroom in advance, and only needs to be turned on when the test starts. This installation method is relatively standardized and safe, and since the installation height will be slightly higher than the upper edge of the blackboard, it is more effective to prevent human damage.

From the analysis of the methods of artificially destroying the signal jammer in the examination room, the most common methods of destruction are: unplug the antenna of the interference device, unplug the power cord of the interference device or the network cable of the network communication. In order to effectively prevent these damage methods, the current mainstream signal jammers in the examination room basically use the method of built-in antenna, that is, the device is installed in a closed shell as a whole, and the antenna can no longer be directly contacted from the outside. And the SMa-818B5 test room signal jammer designed by our Nanjing Bokang Electromechanical Technology Co., Ltd. specially designed for the test room environment has achieved the equipment's switches, power lines, network communication lines, etc., all concentrated in a hidden installation box. , which further improves the level of protection against vandalism!