What to pay attention to when choosing a mobile phone jammer in the examination room
When buying a cell phone jammer, you must choose a product that detects the shielding effect. In the selection process, you must see whether all mobile signals can be shielded. The function and model of the mobile phone jammer are different, and the function and efficiency are also different. Therefore, we must choose a suitable mobile phone shielding device with obvious shielding effect. According to the past experience and occurrence of fraud prevention of new technology in the college entrance examination, the following points should be considered when choosing a good mobile phone shield in the examination room:
1. According to the output power of mobile phone jammers and the difference in application areas, they can be divided into conference halls, military, detention centers, examination venues, petrol stations, and information security venues. According to the difference of different environments, in order to give full play to its functions, the test site must choose the test site mobile phone shielding device.
2. Because the mobile phone is upgraded quickly, especially after the emergence of 5G, the signal transmission of the mobile phone is more powerful, and the faster networking effect has also increased the difficulty of preventing fraud in the exam venue. The shielding effect of the previous 4G mobile phone jammer on these mobile phones has been greatly weakened, and even failed. Therefore, it is necessary to install a 5G mobile phone signal jammer that can shield 5G mobile phones in the test site!
3. The quality and function of the mobile phone shielding device selected in the examination room need to be looked at. First check its shielding range, you can't just try one or two kinds of mobile phones and you're done. In the exam session, the mobile phone networks used by fraudulent students are different. If the output power of the mobile phone jammer or the network bandwidth is insufficient, 5G will not be shielded. Therefore, it is necessary to find the mobile phones with different network data of the mobile communication providers at this stage. Able to complete the test. Make sure that the scope area can reach 1 test room to be considered qualified! After turning on the test shielding effect, you must ensure that the mobile phone has no signal within 30 minutes, and it may not be good or bad. In addition, if the shield of the metal shell is started for about 60 minutes, the front and rear surfaces of the shell are touched by hand. If the heat is not too hot, there is no problem. If the hand is particularly burnt, it will be unqualified, because the continuous heating of the device will cause the output power of the shield Descent, it is impossible to work stably, and it is easy to be injured!
4. When choosing a mobile phone shield in an examination room, radiation needs to be considered.
Sample Image Gallery
