are phone interceptor illegal

cell breaker sprint used in examination rooms generally have more appearances with built-in antennas, which will not create psychological pressure on examinees in the examination room, but also play a beautiful role. It is the most used instrument in standardized examination rooms, and the machine is controlled at 4W per channel. Carried out under the standard security. So it has no impact on people. The coverage area of a machine is about 10-200 square meters (depending on the distance of the signal source), the machine's penetrating ability is weak, and it is only suitable for use in open venues or classrooms.

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