In modern prison management, as an important security tool, the cell phone signal shielding device is getting more and more attention. In order to maintain the safety and order of the prison and prevent prisoners from using mobile phones for illegal communication, it is very important to choose an efficient cell phone signal interference blocker. This article will introduce its application places and precautions.
Application site
1, prison mobile phone signal shielding device is specially designed for outdoor open environment or prison, schools, troops and other large areas of signal shielding.
2, prison users should refer to the height and layout of the building in the prison area, the size of the supervision place, the distance between the prison and the surrounding base station, etc., generally need to use multiple prison mobile phone signal shielding devices
3, school users should refer to the number and layout of teaching buildings or dormitories and the distance between the surrounding base stations.
Matters needing attention
1, the effective shielding range of the prison mobile phone signal shielding device will be different in different field locations. This is closely related to the signal field strength of the site. In the same place for different types of mobile phone shielding range is not necessarily the same.
2. Factors affecting the shielding range include: the distance and orientation from the base station, whether there are obstacles nearby, the wall materials of the site buildings, the installation height of the shielding device and the installation specifications of the prison mobile phone signal shielding device. It can be mounted on the wall or can also be installed on the vertical pole, the recommended installation height is 3-15m; For outdoor installation, ensure that the host and antenna are under the lightning rod.
3, prison mobile phone signal shield is a high-power model, if the use of a shield to cover the building, the shield can not be installed in the building (the wall steel and concrete structure will attenuate the signal transmission greatly), but should be installed in the front and rear of the target area 20-30 meters, At the same time, the installation height should also be appropriate, and there is no obstacle between the antenna and the target building.
