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When using active interference, you do n’t have to worry about putting yourself or anyone else at risk. Police, fire and EMS radio users and pager users can still communicate, but your customers, customers or students will not be disturbed by non-emergency mobile phone conversations, thus providing a quiet environment. Once the jammer is turned off, the phone will automatically re-establish communication with the cellular base station-those base stations affected by the jammer will again be able to receive cellular-based services. It should be noted that using a jammer will not damage the phone in any way. It should also be noted that the same situation applies to any GPS jammer model we carry.
https://www.perfectjammer.com/gps-blockers-jammers.html

If you are looking for a phone interceptor device that is less than 3 feet away, be sure to give the device a shot. We will not be against you. We even hope it is useful to you. These devices are as useful as mobile apps that tell you how to use your own mobile phone to make a mobile phone jammer (save money without buying the app)
https://www.perfectjammer.com/wireless-wifi-bluetooth-jammers.html

Now, as prisoners use mobile phones illegally, more prisons are aware of the threat to the public and correctional workers. Mobile phone jammers in prisons are increasingly becoming a security requirement for prisons, prisons and detention centers. Recent cases have shown that prisoners with illegal mobile phones can use the device to transport contraband to the prison system. To make matters worse, many prisoners have used mobile phones to coordinate and execute plans to avenge witnesses and corrections officers and develop escape plans.
https://www.perfectjammer.com/

Some customers ask why we do n’t carry remote control jammers, code capturers, and LoJack blockers, or whether we can build or obtain them customarily. The answer is no. In the "Signal Jammer", we are equipped with professional signal blockers, detectors and other practical and productive equipment, rather than tools that encourage criminal mischief or annoyance.
https://www.perfectjammer.com/all-gsm-3g-jammers-blockers.html

The GPS signal is a radio signal using a specific frequency. GPS actually has two main frequencies, one is mainly used for public non-military purposes (1575.42 MHz), and the other is only used by the US military (1227.6 MHz). Since GPS is nothing more than weak radio waves, although technical equipment and expertise are required for this purpose, the use of GPS jammers can interfere or distort these waves.
https://www.perfectjammer.com/drone-signal-jammers.html

Mobile phone jammers are becoming more and more popular in schools, for good reason. Many teachers are tired of trying to stop students from texting in class and wonder how to stop cell phone use in class. Students will ignore lectures when browsing social networks. Some people text or even conduct research online to deceive the exam. Although these jammers can terminate mobile phone communication and seem technically complex, you may be surprised by their simplicity, which can be achieved by pressing a button.
https://www.perfectjammer.com/all-cell-phone-jammers-blockers.html

For the safety of cars, trucks, buses, vans and even ships, just plug it into any cigarette lighter or vehicle power outlet to stop the GPS tracking signal. With a coverage of up to 10 meters, you can protect you from logging in even on the largest vehicles. Just plug it into a standard cigarette lighter or a power outlet with a 12V power supply, and it will be reasonably designed and easy to use. By blocking any GPS tracking on and in the vehicle being sent, it will automatically protect you.