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Today, we recommend that all universities install smartphone gsm jammer at the test site to prevent cheating on exams. In order to prevent candidates from using unfair means with some high-tech equipment, low-power jammers are allowed at the test site. During the tests conducted, some students used Bluetooth and headsets to communicate with external handlers. Jammers are easily available on the Internet. Due to this interference, both mobile phones and Wi-Fi are disabled.At a distance outside this range, you can finally talk. If you speak loudly and casually, the people around you will feel uncomfortable. I like to be quiet, so we installed this gsm radio shield in the subway station, and the signal received by the mobile phone is not good.

If you want to interfere with multiple frequency bands, our multi-functional GSM jammers can meet your requirements. 2G 3G 4G 5G has a strong interference ability, which can block mobile phone signals at the same time. The electromagnetic wave cover of a smart phone can determine the interference distance according to the actual situation, and the connection with the phone is often lost. I used a Cell Phone Jammer Circuit Using 555 Timer to cause radio interference, and radio waves disappeared and went out of range in the blink of an eye. Now, the number of people interested is increasing.

There is a mini phone jammer that looks like a small box. When the battery is fully charged, it can be used for a long time to help you focus on the important things. A powerful smartphone follower to ensure silence around you Yes. For security reasons use powerful military Cell Phone Jammer Circuit Using 555 Timer in prisons with adjustable output design features.Mobile phones can easily cause major problems while driving. People use phone bans to keep roads safe. They use mobile phone jammers. Here are various jammer devices available for your car, so you can stop talking while driving. The driver's cell phone will not receive the signal. Using a signal blocker is a smart way.