Cell Phone Blocker Radio Shack Blocks 3 Major Carriers
Generally, high school campuses will install Cell Phone Blocker Radio Shack , one is to prevent students from using mobile phones during class to affect their studies, and the other is to prevent students from returning to the dormitory at night to play mobile phones and not sleep to affect their rest. There is no good solution to this, because the current mobile phone signal jammers cover all frequency bands, that is to say, all mobile and telecom signals are blocked, so go to school well, the school does this for the good of students . Now the Cell Phone Jammer used in schools is full-band, it can block all 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals under the three operators of China Mobile, China Unicom and Telecom. Its principle is to transmit the frequency through its own To interfere with the mobile phone to receive the frequencies sent by the base station and wireless router, so as to achieve the purpose of shielding them.
The Cell Phone Blocker Radio Shack on your picture has a relatively small power and is more suitable for use in school classrooms, because it cannot penetrate the wall. When it is placed in the dormitory corridor, the effect should be relatively poor. The windows in the dormitory are still There is a signal coming in from the bathroom. But if there is no good way to crack, this can not be avoided by any number and band cracking, because no matter which number or band you use, it is within its shielding range. There is also bluetooth software, because its frequency will also be blocked by mobile phone jammers. The only way to counter it is to install a cell phone signal amplifier near the place where the cell phone signal jammer is used.