Device to block cell phone signal , block cell signal in room
The Selectable Portable 8 Channel Mobile Phone Jammer is a product designed for some places where mobile phones cannot be used (secret). The signal blocker is powerful and can block signals of all frequency bands. Owning one can help you solve all the problems of shielding signals. It can shield WiFi, 3G, 4G,5G, and other frequency signals. The maximum shielding radius is up to 20 meters, depending on the local network signal. The most important thing is that it is small in size, light in weight, easy to carry, and has a carrying protective cover so you can take it with you.Mainly applicable to College exams to prevent students from cheating. It is also applicable to various large, medium and small meeting rooms, concert halls, theaters, etc. of the party and government agencies and enterprises. As well as prisons in special places, gas stations and oil depots that require extra attention. The signal jammer can be used, it will not interfere with other electronic devices when it is turned on, and the mobile phone can return to normal after leaving the designated range.
device to block cell phone signal
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- how to block phone signal in a building
- how to block phone signal in a building
- how to block phone signal in a building
- how to block phone signal in a building
- how to block phone signal in a building