There are so many exams now, no matter if it is the exam organized by the school itself. It is still a big exam in society. These are inseparable from Cell Phone Jammer Online for fairness, so the quality of the signal jammer determines the fairness of an exam. Therefore, it is necessary to choose a mobile jammer for the fairness of the test. I have learned that there are indeed many manufacturers of signal jammers in China. There are many types of mobile phone jammers. Before purchasing, users should be clear about their needs. cell phone jammer In order to prevent an accident in the examination room due to a poor shielding effect, we are still paying attention to the correctness of the method of use. Signal shielding is also affected by many factors, so you must pay attention to your environment when choosing, which will affect the shielding quality of the signal shielding instrument.
Most schools use exam room type Cell Phone Jammer Online Suitable for long hours of work and good quality. Secondly, how big are we in the shielded area? For example, a room of 100 square meters is still a venue of thousands of square meters. If the area is large, the Power must be larger, and if the area is small, you must consider using adjustable shielding Power . Then there is what frequency bands need to be shielded. Are China Mobile, China Unicom, Telecom, and CDMA all shielding? It is still only necessary to shield some frequency bands. Whether there is any obstruction between the mobile phone jammer and the wireless communication device. The interference signal emitted by the mobile phone signal jammer will be attenuated to different degrees after passing through the obstruction, please try to prevent it. Indoor jammers are recommended to be placed at a height of about 180cm-220cm above the ground, and the angle is better to lean forward. The weaker the wireless communication signal strength in the use environment, the stronger the theoretical shielding effect of the mobile phone jammer. The farther the mobile phone signal jammer is from the base station, the stronger the theoretical shielding effect of the mobile phone jammer.
