Recently, a kind of device has aroused people's heated discussion. The reason is that during the examination, each school has successively installed it in the examination room. Then it was proposed to be discussed that it is a cell phone jammer. In fact, this kind of device is a cell phone jammer that can isolate communication signals, which can help put an end to the phenomenon of cheating similar to using communication devices in the examination room, It is a good counter measure. Generally speaking, if a candidate wants to cheat in the examination room, he must use communication equipment to receive information or send information, so that he can contact people outside to achieve the effect of cheating. Therefore, in this case, a kind of cell phone jammer device called special for examination has been manufactured. It can shield the communication signal and wireless network signal of the mobile phone within the effective shielding range, so that the communication device can not receive information within the shielding range, and the mobile phone does not have any signal. It is this effective countermeasure. Today's cell phone jammer has become a necessary device in various large examination halls, So that the school can establish a more secure examination environment. As for the increasingly common means of cheating in the examination room, a professional and easy to use cell phone jammer is definitely a problem that needs to be considered in every examination room, so it is necessary to find a powerful manufacturer to meet this requirement. Nanjing Baikang Electromechanical welcomes customers to come to learn and consult the details of the cell phone jammer.