Professional Technology Blog At Perfectjammer

According to introducing, face increasingly “progress” wireless communication equipment cheats means, bureau of justice of Beijing according to “civil air defense” and “technical prevention” photograph is united in wedlock, with “civil air defense” the working principle that gives priority to, equipped to each examination place newest technical equipment — detector of wireless headphone and full […]

In order to prevent cheating, the use of cell phone jammer, also known as wireless signal blockers, in various examination rooms has increased in recent years. For colleges and high schools, with more exams and more use of the shield, it is generally more cost-effective to buy a batch for long-term use. Some schools will […]

The cell phone jammer in the examination room is mainly used in the college entrance examination, such as the college entrance examination, the graduate student entrance examination, etc. The cell phone signal shield in the examination room is different from the prison signal shield, which has its own distinct characteristics: first, the working time is […]

Because the university is much, student is much, the examination room that all sorts of graduate student entrance exam, English 4 six levels of test USES is very much also. In order to ensure the fairness and fairness of exams and prevent electronic cheating, the use of wireless signal shielding devices (also known as cell […]

For many of the school, every year the university entrance exam is coming, to be prepared for the university entrance exam to make, whether the classroom setting and arrangement, or personnel in place, and how to stabilise the examination room order, make school more headaches, however, now of “black” of science and technology means of […]

If you are a heavy mobile phone user, then the battery and signal of the mobile phone is the lifeline, the battery is below 50% or the signal is not satisfied with the feeling of feeling uncomfortable and insecure. For such heavy cellphone dependence, the most unpleasant days of the year are the three days […]

In our daily life, we often come into contact with 4G signal, but how much do we know about 4G signal? In fact, 4G signal refers to the fourth generation of mobile communication technology, foreign language abbreviation: 4G. The technology is available in td-lte and fdd-lte (technically, LTE is only 3.9g, and despite being touted […]

In recent years, various types of cell phone jammer has emerge in endlessly, see we are dazzling, but in fact is not all the products are right we applied in place, we need some of the products are common, so not suitable for our application in other areas, there is a very special blockers, also […]

Recently the university entrance exam is over a period of time, must have many students know their own achievements, review the test the test time whether or not you will find that there is no signal around the examination room during the test, since the ancient times to cheat things exist all the time, especially […]