The shielding radius of 20 m radius of adjustable cell phone signal

In response to this communication principle, cell phone jammers in the course of their work to a certain speed past the lower end of the channel frequency to high-end scanning. The scanning speed can receive messages in the mobile phone signal interference in garbled form, the phone can not detect normal data sent from the base station, the phone can not establish connection with the base station. Performance of mobile search, no signal, no service system and so on.
   Common market, cell phone signal jammers, and its role frequency: 869 ~ 894MHz; 825 ~ 960MHz; 1805 ~ 1880MHz 1900 ~ 1990MHz and so on. It is convenient to install and use the BH-201 cell phone jammer.The role of band for the CDMA800, GSM900, DCS1800, PCS1900. Can control the range of 40 meters in diameter, using DC-DC converter input voltage, 5V output voltage.

Basic functions:
  A slow start function
Jammers in power, the working power in 4 seconds from zero to stabilize.
    2 shielding
Start after 35 seconds so that the phone is within the scope screen.

Another: Bluetooth work in the 2.4GHz frequency band, bandwidth of 1Mb / s. Will not affect Bluetooth.

First, the cell phone signal jammers Principle
The product is self-developed next-generation mobile phone signal jammers, in the course of their work to a certain speed past the lower end of the channel frequency to high-end scanning, the scanning speed can receive messages in the mobile phone signal interference in garbled form, phone can not detect the normal issued from the base station microwave signal data, within a certain range so that the phone can not establish connection with the base station, to disable the use of mobile phones purposes. cell phone jammer has been effectively divided so that it only interferes the down-link. Performance of mobile search, no signal, no service system and so on.
Second, product use:
Widely used: various types of examination room, conference rooms, gas stations, oil depots, churches, hospitals, courts, military areas, libraries, theaters and other places.
1 exam: Candidates can prevent and eliminate the use of modern communication tools to cheat.
2 meeting rooms: to ensure that the venue order, confidential meeting content, to prevent leakage of confidential meetings.
3 gas stations, oil depots: microwave signals to avoid interference caused by fire, explosion.
4 Church: mobile phone signal noise can be removed in order to maintain places of worship and majestic.cell phone jammer would not cause any interference to the base station.
5 hospitals: use the phone to prevent the harm caused by the human body for medical equipment and instruments work interference.
6 the court: the court can maintain the solemn and sacred.
7 military areas: to prevent the leakage of military secrets.
8 library: You can keep reading, learning a quiet environment.
9 theaters: as a place of entertainment, the noise can be removed to maintain audience interest in the program.

Third, the product features
The device is suitable for a wide range of performance, it can limit the transmitting station 200 meters away from any places, and the shielding radius of 20 m radius of adjustable cell phone signal. The course of cell phone jammer production strictly complied with the ISO9001 quality system. 4-channel models can be effectively shielded CDMA, GSM, DCS, PHS mobile signal, it only block mobile phone signals without an impact on other electronic equipment, is harmless.