Mobile phone signal jammers are divided into many styles: one is classified according to the type of signal to be shielded, the other is classified according to the Power level, and the other is classified according to the appearance. The shielded signal can be divided into GPS, WIFI (2.4G, 5.8G), UHF, VHF, 315, 433, 2G, 3G, 4G, 5G and other signal frequency bands. This frequency band can be combined according to different needs, and can form different types of signal jammers. It is mainly used in school examination rooms, prisons, detention centers and other places where mobile phones are forbidden to enter. So how should you choose a suitable Cell Phone Jammer Amazon according to your needs? From the manufacturer’s point of view, if the choice is improper, the installation will have no effect. cell phone jammer It is easy to cause product returns or exchanges, wasting time and freight, so how to choose a mobile phone jammer that suits your needs.
First, the appearance is not particularly important compared to the mobile phone jammer, but the structure of the setting is different. From the appearance, Cell Phone Jammer Amazon can be divided into external antennas and internal antennas. The external antennas extend outward due to the external antennas. The external antennas are more stable because of the extended antennas. In addition to the external Power adapter of the antenna, the external antenna of the machine is also external, so compared with the internal antenna, it occupies a larger space. Generally speaking, the antenna and Power supply of the built-in antenna are installed in the case, which occupies a larger area. Small and convenient to use. Second, the size of mobile phone signal jammer Power : generally divided into low Power , medium Power , and Power . Low Power : total Power 3W-80W. Medium Power total Power 80W-160W, Power : total Power 160W-800W. Except for special occasions, it is generally not recommended to use Power signal jammers, which will seriously interfere with the base station signal transmission and also have a certain degree of radiation to the human body. For educational examinations, it is recommended to use low Power in standardized examination rooms and conference rooms. Even if a low Power can not achieve the effect in some places, you can choose multiple cellular layouts. This effect is better than using a single medium Power or Power , and the radiation is not that big. Third, the Power supply mode: battery-Power ed, the handheld is a built-in lithium battery, which is convenient to carry. After the Power is used up, you can use the charger to charge; 220V Power supply, the desktop computer used in the examination room is Power ed by 220V voltage. There are also vehicle-mounted signal jammers, which are generally Power ed by 12V. Fourth, the place to be used: If it is used in an indoor place, the mobile phone jammer that is generally suitable for examination rooms, conference rooms, offices and other spaces can be low-Power , and the gas station needs to use explosion-proof and high-temperature resistant; if it is an outdoor open area, You need to use a Power cell phone signal jammer to reach a suitable distance. Especially there are certain requirements for wall penetration. Fifth, the frequency requirements, that is, the signal classification mentioned at the beginning. Before buying, you need to know which signals you want to shield. The normally shielded mobile phone signals are (2345G and 2.4G), but currently 5g mobile phones that can shield 5g signals Signal jammers are already a mainstream purchase.