Why install a signal shield?

　　In the old days, letters were the only means of commuting, while mobile phones were the flashy devices of the rich. Today's world is undergoing more rapid and advanced technological changes than ever before! From children to adults, people are addicted to smart phones. Things that used to take hours to complete can now be easily done with your mobile phone in a minute or even seconds. Because almost everything on the mobile phone is easy to obtain, people have become accustomed to their smart devices, so that they consciously or unconsciously use these devices, even in places where mobile phones are not allowed or should not be used, which will inevitably bring troubles and even security risks, such as becoming a new noise pollution, For example, there are always some people who don't comply with the regulations when they have to turn off their mobile phones. When the plane takes off, they still talk to their relatives and friends on their mobile phones. At the critical juncture of the performance, between the movements of the symphony or on the stage of the drama, the color bell rings suddenly. Another example is that eight out of ten people are addicted to mobile phones, and they keep brushing their mobile phones anytime and anywhere, It interferes with the normal life and work order. What's more serious is that it becomes a new channel for divulging secrets, which poses a threat to the security of confidential information; it will also become a new criminal means, such as fraud by SMS, which has an impact on social stability.

　　Therefore, while popularizing mobile phones, in addition to strengthening the promotion of civilized use of mobile phones, mobile phone signal shielding devices have come out and become increasingly popular, so as to prohibit mobile phone signals in specific locations.

　　The mobile phone is connected with the base station through radio waves through a certain frequency, and completes the transmission of data and sound with a certain baud rate and modulation mode. According to the above principles, the mobile phone shield is generally composed of power supply, electronic scanning control unit, segmented RF module unit, amplifier unit, transmitting antenna unit, etc. The scanning signal generated by the signal generator, after passing through the inverter, enters the oscillator and modulates to the working frequency band of mobile communication, and then is amplified by the power amplifier and controlled by the voltage regulator. The amplified sweep signal is transmitted to the air in the form of radio waves. Due to the random code interference caused by the sweep signal in the received message signal of the mobile phone, the mobile phone can not establish normal connection with the base station. At this time, the mobile phone will be separated from the base station communication network, and there will be search network, no signal, no service system and so on.

　　So, in modern society, what benefits can be gained by using mobile phone signal shielding device?

　　· professionals and corporate buildings use cell phone signal jammers to protect personal data and confidential information stored in their smartphones.

　　Educational institutions use mobile phone signal masers to prevent students from cheating in exams and increase their emphasis on learning.

　　The library uses mobile phone signal jammers to ensure that readers can immerse themselves in insightful books without being distracted.

　　The use of mobile phone signal jammers in religious places such as temples, mosques and churches enables worshippers to pray in silence and the environment necessary for quiet meditation.

　　Security agencies and governments use mobile phone signal masers to prevent cyber crime and online fraud.

　　The hospital uses mobile phone signal shielding device to create a quiet area for patients, etc.

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