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Phone Signal GSM 925-960MHz

Most of the rest of the world uses GSM. The global spread of GSM came about because in 1987, Europe mandated the technology by law, and because GSM comes from an industry consortium. Although it is now 4G, GSM signals are still the mainstream in many areas.

The GSM cell phone jammer is one of the most popular mobile jammers. It is often used in school classrooms, education institutions, examination halls and other places. Normally, this kind of interference device also has interference with 3G,4G and other commonly used signal functions, which can ensure that the cell phone signal is completely cut off.

When you have important meetings or secret meetings, this kind of jamming device can be a good way to prevent leaks and eavesdropping.
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