Cut off signals by signal jammers
Signal jammers, also known as a mobile phone blocking program, is a device that prevents it from establishing a wireless connection in a certain environment and forms a certain protection area. During the work period, all mobile phone signals in the protected area are blocked and in a network-free state, which is mainly applicable to places where mobile phones and smart phones are prohibited.
Signal jammers are mainly targeted at mobile phone networks. Some GSM blockers may also interfere with other networks under certain circumstances, such as WiFi, GPS, LOJACK, etc. The interference range of the gsm jammer depends on its own model, and most gsm signal jammers range from 5-40 meters.
GPS positioning brings many advantages, which is well known, but GPS may also keep us under the eyes of others, all the time. How can we prevent these unnecessary tracking and protect our location privacy and information security? Professional GPS signal jammers are just right.
The gps signal jammer can prevent unnecessary eavesdropping. If the GPS jammer is carried around, the signal of the global positioning system used to locate its position will be disturbed, resulting in the inability to perform GPS tracking. Moreover, many gps interferers only interfere with the GPS band and will not affect the use of other electronic devices.
Cell phone jammers are also called cell phone signal jammers. While working, they can block all mobile phone signals in a certain range, including GSM 3G 4G WIFI and other frequency bands. The interference radius is determined by the model. At this time, all mobile phones near the test site include other High-tech cheat tools are in a state of no network.
Nowadays, a variety of different types of cell phone jamming devices are sold on the Internet. This idea is really tempting: you only need to connect the switch to prevent the annoying mobile phone conversations and cheating during the exam. It is understood that in the Offenburg prison in Baden, cell phone jammers have been used to block cell phone signals in prisons to prevent criminals from carrying out dangerous communication activities.