How to choose a mobile phone signal jammer?
Cell phone jammer are manufactured to reasonably avoid and jam mobile phone related signals such as GPS, WIFI, 2G, 3G, 4G, or 5G. It is mainly used in school examination rooms, prisons, detention centers, etc. to ensure the fairness and justice of exams, high school entrance exams, college entrance exams, and regular mock exams.
So how do you choose a jammer? From the manufacturer's point of view, if the choice is incorrect, the product will be easy to return or exchange, or it will not affect the installation. How do I choose a shielded device manufacturer in 5 steps?
First, where to use: When used indoors, shield devices that are generally suitable for spaces such as inspection rooms, conference rooms, offices, etc. may have low power, and gas stations use explosion-proof and heat-resistant. need to do it. If you are in an open outdoor area, use a high power signal jammer to reach the right distance. In particular, there are certain requirements for wall penetration.
Second, everyone knows the frequency requirements, 2G, 3G, 4G: Before you buy, you need to know the signal to block mobile jammers. A normal mobile phone signal (234G) can be selectively blocked by simply blocking it. 23G or shield 34G only. It can be factory adjusted and also has 2.4GWIFI, 5.8GWIFI and other frequency bands. Normal signals can be shielded quickly.
Third, the appearance is not particularly important compared to the shield, but the structure is different. From the outside, the shield can be divided into an external antenna and an internal antenna. Since the external antenna has an external antenna and extends outward, it occupies a large space compared to the internal antenna. This is because the antenna is stretched. The effect of the external antenna is more stable.
Fourth, shield device power: The general power range is 3W-480W, and shield devices are generally divided into low power, medium power, and high power. The power is 3W-100W. In general, we do not recommend using a high power signal shield. , It seriously interferes with the signal transmission of the base station and also has some radiation to the human body. It is advisable to recommend some medium power machines, such as exams, schools, bar exams, etc.
Fifth, power supply size: The handheld is a built-in lithium battery and can be charged using the power adapter after it runs out of power. Desktop labs use a 220V voltage power supply, and in-vehicle vehicles typically use a 12-36V voltage power supply.
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