Nowadays, the emergence of shielding device has solved many hidden dangers of disrupting order for the examination room, allowing candidates to take the exam in a fair environment. The principle of this kind of test signal jammer is actually to block the communication signal of the mobile phone by isolating the electronic signal, which can prevent the phenomenon of using the mobile phone to cheat.
Generally speaking, the effective range is within a radius of 0 to 30 meters. Generally, a low-power test signal jammer is enough to cover an entire classroom, which meets the needs of the test room for shielding signals, and is especially suitable for schools to purchase signals for the test room. shield.
Many customers have troubles with the purchase of test signal jammers. At this time, you can come to contact topsignaljammer. It is a manufacturer with many years of high-quality and rich experience in the research and development of jammers. It has a first-class technical team for products. Quality does technical support, and is deeply favored and selected by customers.
Can the test signal jammer block all communication signals? Speaking of it, many people are unfamiliar with test signal jammers. In fact, it has been widely used in college entrance examination examination rooms. In the college entrance examination last year, many examination rooms installed this kind of equipment and received them. Many good responses have been proven to have a good effect on preventing electronic signal cheating. Starting this year, it has been vigorously promoted so that more examination rooms can also be equipped with shielding devices.