The placement of the jammer is also very important

Each antenna in the cell phone jammer has its own power-on and radio wave setting buttons. You can use this button to set the frequency band to be cut and the radio waves you do not want to cut. Shield mobile radio signals separately, such as GSM / CDMA / UHF / VHF / DCS / PHS / 3G / 4G / 5G. Different wireless communication devices cannot communicate with each other and can be set according to the signal frequency band. If this is not the case, normal use can be resumed. Therefore, make sure to turn off the device when it is not in use, and block other electronic devices and radio signal devices required for 3G security.

If it can emit a signal that interferes with the radio wave of the mobile phone frequency, the communication of the mobile phone can be blocked, so that all the mobile phones in the hall can be prevented from ringing. However, there is no way to stop cell phone alerts that do not require communication. For similar reasons, similar results are expected in hospitals that require quiet rest. When it is necessary to strictly protect confidential information in a data center or the like, communication with the outside can be blocked to prevent information leakage.

If you are using and purchasing a gps blocker, you must first install the antenna on the main unit according to the corresponding logo, and then connect the power supply of the main unit. Avoid using cell phone jammers without properly installing the antenna. The effective coverage of the shielding equipment is a circular area centered on the equipment. Therefore, when selecting the correct position of the signal jammer, care must be taken to avoid dead spots in the shielding layer.