The 21st century is the era of information development, and the development of communication technology is changing with each passing day. As a unique family in the communication family, mobile phones play an important role in people's lives and industrial and agricultural production, but while they bring great convenience, there are also some problems that cannot be ignored. In order to avoid these problems, cell phone signal blockers are produced. The mobile phone signal jammer in the Greatjammer test room is essentially electromagnetic interference to the wireless network on which the mobile phone communicates, making the mobile phone unable to access the network, and then unable to receive the information from the mobile network, so it is almost impossible to crack.
So what is the principle of the jammer? The mobile phone signal jammer in the examination room is divided into omnidirectional type and directional type according to the shape of the shielding. The omnidirectional type is olive-shaped, and the directional type is fan-shaped, so the omnidirectional shield is more directional than the directional type, and the shielding area of the device is larger. The mobile phone signal shielding device generates certain electromagnetic waves and interferes with the downlink of the mobile signal. If the power of the jammer is greater than the power of the local mobile signal, then the phone will have no signal. If the power of the jammer is less than the power of the local mobile signal, the phone will have a signal.
How to use mobile phone signal jammer:? 1. Select the area to cut off the mobile phone signal, and place the isolating switch on the table or wall in this area. 2. After the installation is complete, turn on the power of the isolation switch and turn on the power switch. 3. After connecting the equipment, press the power switch and breaker to work. At this time, all mobile phones opened on site are in the search network state, and the base station signal is lost. The caller and callee cannot establish a call.
Therefore, do not consider hacking the mobile phone signal blocker in the exam room when taking the test. This will only cost you money and energy, and in the end you will not be able to do anything. Moreover, the current exams are strict, with cameras, security gates, etc., so you can't do anything at all, only study hard and prepare carefully. This is the best way. Only by solid learning can you have the strength. In this way, no matter what shielding device is used in the examination room, you are not afraid. In other words, schools can use shielding devices with confidence. It can truly block cell phone signals to prevent cheating and ensure that students have a fair chance to compete. Greatjammer focuses on the development and production of mobile signal shielding, which can be used for exams and other occasions when needed. Provide professional services.