For example, if the examinee uses the wireless device to interfere with the signal in the prison, we can probably understand that it can prevent the criminal from using the wireless device to interfere with the signal in the prison. People only know one thing about how it works and whether it will have an impact on other electronic products.

    In general, the frequency sent by the wireless signal jammer during operation will interfere with the normal frequency of the mobile phone receiving the base station, resulting in the mobile phone unable to connect to the base station, receive and make calls, send and receive text messages and browse the Internet. When the wireless signal jammer is turned on, even if the mobile phone is full of signals, there is no signal in the actual process of use, which is a "false signal" of the mobile phone.

    When you turn on the wireless signal jammer, it only has the shielding effect on the mobile phone and has no effect on other electronic devices. This is because the electromagnetic signal transmitted by the shield is completely within the wireless frequency range specified by the state, which will only block mobile phone communication and will not affect other electronic products.