Eight-channel Who Invented Cell Phone Jammer is the more common one currently on the market. Support the current mainstream communication frequency signals on the market. Mobile, telecommunications, and China Unicom are all fine. Even if the other party is using a hotspot or Bluetooth, they can all be blocked. The mobile phone jammer with external antenna uses a metal shell such as aluminum alloy with better heat dissipation capacity. It can prolong the use time of the machine, prevent heat generation, and has a better heat dissipation effect. The built-in antenna adopts a plastic shell, and the shielding effect is relatively stable. At the same time, the external antenna also has a built-in turbo fan to ensure better heat dissipation. In addition, the mobile phone signal jammer is small and exquisite in appearance, has a relatively high appearance, is easy to install, and has a good shielding effect. Therefore, it is very popular among universities, and of course this is also related to its advantages. cell phone jammer
Speaking of which, many people are familiar with Who Invented Cell Phone Jammer , because it is an artifact that is widely used in major examination rooms, especially in the 4th and 6th level exams in universities, and helps maintain the examination room. Order, we must know that only by fully guaranteeing the normal order of the exam can we ensure a fair exam environment. Therefore, at this time, we must prevent improper behavior, and mobile phone signal jammers can undoubtedly eliminate this hidden danger.