"A coach from the Nanjing Badminton Sports School told me that there is a backpack in the badminton hall with a bomb in it. Go quickly." At 5 o'clock in the afternoon on April 5, the 110 command center of Nanjing Public Security Bureau of Jiangsu Province received a pol

Several parameter issues that are helpful to the shielding effect of mobile phone signals:

The most important customer groups for products such as

The test room signal jammer is a device used to prevent cheating in the test. It can block signals such as mobile phones and wireless networks to ensure the fairness and safety of the test. However, sometimes test room jammers don't work as well as they should, which can lead to

The test room signal jammer is a very powerful artifact, which is currently widely used in various test rooms. However, there are some tricks to installing signal jammers. For example, its scope of application. This range determines how many signal shields need to be placed in an

With the continuous development of communication technology, the mobile network has also been updated several times, from the initial 2G mobile phone network to the current 3G, 4G and 5G mobile phone signal network, and the

Whenever the college entrance examination, high school entrance examination or college English test CET-4 and CET-6, the mobile phone jammer in the examination room, as an important tool to maintain the fairness of the test, ensure the stability of the test room and prevent candi

In the past ten years or so, it has become common for schools to purchase and install

1. The size of the power of the body of the mobile phone signal jammer. Nowadays, there are many 5W fuselages on the market, but the actual power of 1W has not been reached. Therefore, it must be actual power. The shielding range is about 1-10 meters, and the shielding range is 1

A good shield can do it. Dazhan Electronics has professional personnel and factories, and the new