Nowadays, the emergence of mobile phone signal jammers has solved many hidden dangers of disrupting the order for the examination room, so that candidates can take the examination in a fair environment. The principle of this How To Build A Cell Phone Signal Blocker is actually to make the communication signal of the mobile phone fail by isolating the electronic signal, which can prevent the phenomenon of cheating by using the mobile phone. Not only that, it also has a good shielding effect for the WIFI2.4G signal. Generally speaking, the effective range Within a radius of 0 to 30 meters, a low-power test cell phone jammer is generally enough to cover an entire classroom, meeting the test room’s need for shielding signals, and because the battery life of this device is generally three hours, although due to heat dissipation Poor, but this also results in a particularly high price/performance ratio, which is especially suitable for schools to purchase mobile phone signal jammers for examination rooms.
Buying trouble for How To Build A Cell Phone Signal Blocker is something that many customers have. At this time, you can come to contact perfectjammer to consult the price of signal jammers. It is a manufacturer with many years of high-quality and rich experience in research and development of mobile phone signal jammers. It has a first-class team. Our technical team provides technical support for product quality, which is favored and chosen by customers. Can test signal jammers block all communication signals? Speaking of which, many people are unfamiliar with the test signal jammer. In fact, it has been widely used in the examination rooms for the college entrance examination. The response has been very good, and it has been proven to have a good effect on eliminating electronic signal cheating methods. Since this year, it has been vigorously promoted, so that more test rooms can also install mobile phone jammers.
