Can signal jammers go through walls?

In response to the increasingly rampant electronic signal cheating methods, many schools have even purchased test signal jammers as a countermeasure, but their effective range is limited, so new problems have arisen. Do jammers still work?

Topsignaljammer  2022.3

In fact, we analyze the specific situation of this problem. First of all, we need to know what power this test signal jammer is, because it is divided into 12W, 16W and 18W, and the effective range generated by different powers is different. If it is only low power, it is generally used in a small open area, just enough to meet the size of a classroom. However, if it is required to pass through the wall, there will be no shielding effect after actually passing through the wall, so if you choose low power Try not to pass through the wall, you can equip each teacher with one, and if you choose a high-power one, you can use one machine to satisfy several classrooms.